Category Archives: Birding in Maine

Yup, More About the “Westbrook Gull.”

A great day of birding on Friday included new arrivals and migrant waterfowl around Scarborough Marsh (oh yeah, and two more Snowy Owls), continuing good numbers of white-winged gulls in Portland Harbor, and “quality time” with “Westie,” the still unidentified white-winged gull in Westbrook (highlights posted to the store’s Facebook page as usual).

As for this frustrating, fun, and challenging obsession of mine with the “Westbrook Gull,” I won’t rehash the entire story here, but for that please visit this blog entry from January.

During our outing on Friday, Kristen Lindquist and I enjoyed my best photo session of the season with the bird. I’ve posted a variety of photos of the bird into the growing gallery of photos of this bird on our store’s Facebook page, here.

But here I want to discuss a few of the more pertinent images, and explore some of the still-unanswered questions about this bird. First and foremost, and perhaps the single most critical factor in being able to simply dismiss this as an Iceland Gull – likely (due to its pure white wingtips and pale mantle) of the nominate subspecies glaucoides – is the fact (not subject to interpretation) that the wings are short: only two primaries extend beyond the tail, as with Glaucous Gull, and unlike the long, four-primary extension of Iceland Gull of either subspecies. No photo of this bird in four years has shown the typical “long-winged” appearance of Iceland Gull of either subspecies.

It’s impossible to ignore this significant structural feature, but of course, we never base an identification (or lack thereof!) on any one particular characteristic. Unfortunately, nothing else is this clear and distinct.

As the bird reached adulthood, I had hoped that the orbital ring – the narrow band of bare skin that surrounds the eye – might yield a clue, and now that we are in late spring, the bird’s head is pure white and the brighter bill suggests that it is now in “high breeding” (or at least close to it), the color should be as true as possible. Howell and Dunn list the orbital ring of Larus glaucoides glaucoides as pinkish to red, turning brighter reddish by spring. L.g kumlieni is described as purplish-pink to reddish, brightening by spring. As for Glaucous Gull: orange to pale pink flesh, brightening in spring to “orange or chrome yellow.” As for Westie?

I call that simply “pink.” But does that only mean that this bird is not in high breeding yet (which is suggested by the still-brightening yellow of the bill)? If this is as colorful as it gets, it’s a significant strike against a Glaucous Gull, or at least a pure one, but it is not clinching for Iceland Gull of either subspecies, either.

Westie’s dominance of the park leads to aggressive behavior towards other gulls, especially anything of similar size or larger. While the aggressive behavior is more typical of Glaucous Gulls, I think the rather unnatural environment, along with the decided “home-turf’ behavior negates the value of this circumstantial evidence. What it does mean, however, is that it is a royal pain in the ass to get this bird next to something else other than a smaller Ring-bill. I would like to see it next to an adult Herring Gull to compare grayscale, but especially an Iceland Gull of any shape, size, or variety! This was the closest I have come to that goal.

As for Herring Gulls, this youngster was tolerated for a few seconds.

In other words, I still don’t know what this is. But at least it gives me something to do in the winter, and offers a really good exercise in studying the finer points of the endless variation in “large white-headed gulls.” Oh yeah, and it’s a pretty bird, too. Might just have to leave it at that…for now.

And believe it or not, there are other birds at Riverbank Park and the adjacent Westbrook Riverwalk. On Friday, this included one of the continuing Canvasbacks (a rarity in Maine), and a handful of ultra-cooperative Cedar Waxwings!

The Decline of Barrow’s Goldeneyes in Freeport and Beyond.

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I like Barrow’s Goldeneyes! And I like getting to see them every winter, and sometimes in numbers…and only a few miles away from home. But I wish I could see more of them.

Unfortunately, with each passing year, I am seeing fewer and fewer. My local Barrow’s Goldeneye (BAGO) “patch” is the Lower Harraseeket River here in South Freeport. A couple of miles of river between Winslow Park and Bartol Island hosts the southernmost wintering flock on the East Coast…or at least what nowadays passes for a flock.

One of just a handful of locales in the state that regularly hosts more than one or two birds, this once-impressive flock has declined dramatically in the past ten years that I have been watching them. Scanning the river once a week, from early December through the middle of April from a variety of locations (Sand Beach, the Town Wharf, the Harraseeket Yacht Club, Winslow Park, and/or Wolfe’s Neck Woods State Park) I have kept track of arrival and departure dates, and perhaps most importantly, overall numbers.

“High counts” are the maximum number of birds seen at one time in a given time period. While some individuals come and go over the course of the winter, it seems to me that the seasonal high count is a reasonable way of estimating the local population (as keeping track of individual birds is impossible). And my high counts for each of the last nine winters show an alarming pattern:

2004-2005: 23
2005-2006: 15
2006-2007: 10
2007-2008: 2
2008-2009: 9
2009-2010: 2
2010-2011: 6
2011-2012: 3
2012-2013: 2

It has become readily obvious that the less ice there is, the fewer Barrow’s concentrate in the Lower Harraseeket. A deep channel and strong tide combine to keep at least a stretch of the gut at the mouth of the river (between Winslow and tiny Pound of Tea Island) open in the coldest winters. Back in 2004-2005, the river was almost completely frozen, and the narrow strip of open water was so thick with ducks, especially Common Eiders, that it looked as if you could almost walk across the river on their backs!

We also know that the climate, and the temperature of Casco Bay, is getting warmer (yes, that is fact, and yes, this year’s cold winter/spring weather does nothing to disprove this – note that “climate” and “weather” are actually different words that describe different things!). Therefore, I optimistically wondered if the apparent decline in the population of BAGO was nothing more than a lack of ice-caused concentration. The less ice, the fewer BAGO I see.

Therefore, when about 90-95% of the Harraseeket froze this winter (the most extensive coverage since 2004-2005) and ducks concentrated in numbers not seen since then, I was cautiously optimistic that BAGO number would spike:

2013-2014: 5

Not the spike I was hoping for. I searched long and hard to find BAGO elsewhere in the vicinity, but I did not see any (the closest was an overwintering bird in South Portland that has returned to the Fore River for the last two or three years now). That’s a 78% decline from the 2004-2005 high.

Unfortunately, Christmas Bird Counts occur too early in the winter to adequately gauge seasonal high counts of BAGO, although the graph does reflect a decrease in the past ten years (the long-term data set is clouded by low birds-per-party-hour totals as a whole, along with misconceptions about identification in the past).

But this decline is not just apparent in the Harraseeket. Birders have detected a decline in all other known wintering concentrations, especially in Belfast Bay. They are now longer seen on most visits in mid-winter there and it’s been a long time since I have seen a report from Bucksport. However, according to the 1996 A Birder’s Guide to Maine, *1 aggregations of 15+ birds are “regular features in most winters” at these two sites.

In other words, at least in Maine, the decline is real. And it’s time for the Department of Inland Fish and Wildlife to do something about it. No more half-assed, non-action policies that bow to the hunting lobby. No more “please tell us if you shoot one and then say you’re sorry and it will be OK” (with only a disincentive to do so) state policy. *2

In 2009 IF&W listed the Barrow’s Goldeneye as “Threatened.” …And has done almost nothing since, other than set up surveys that are conducted every four years. Oh, and they hung up some posters at boat launches asking people to not shoot them (might as well put a target on them, in my mind).

Let me be clear, there is no evidence to suggest that hunting is causing a decline in BAGO. I think much larger factors are at play. There’s acidification and warming of the ponds and lakes in their limited and narrow eastern Quebec breeding range to changes in winter food sources. Forestry practices could be reducing the availability of suitable nesting cavities as well. There’s lead ingestion and heavy metal bioaccumulation. Then there’s reduced ice in most winters in their primary wintering areas of the St. Lawrence estuary (thereby reducing how many birds come further south) to competition with other native and non-native species (BAGO eat small mollusks, especially mussels – could invasive Green Crabs be impacting the food supply for ducks here, too?). In other words, there are a lot of possible proximate and ultimate causes to the species’ decline. But if hunters shoot one or two (by accident, of course) of the remaining 5, well then the decline becomes even quicker. Even repeated disturbance from concentrated hunting pressure on other species could be impacting where the birds tarry, where they feed, and how much energy they waste fleeing boats and shots.

I am not opposed to waterfowl hunting. But I am opposed to hunting that impacts an endangered species (see, for example: Conservation and Management/Effects of Human Activity in the Birds of North America entry referenced below). The closure of a handful of tiny areas will affect very few hunters, and with more than 99% of the state still available to them, this rates as a minor inconvenience at most. However, this fraction of a percent of water closed to hunting could protect a significant majority of the wintering population – or at least what’s left of it. At the very least, this could buy us some time to find out what the root of the problem is.

I like Barrow’s Goldeneye, and if you do too, it’s time to pressure IF&W and politicians to act. Otherwise, there is a very legitimate chance that this bird will no longer be a part of Maine’s winter avifauna.

Notes:

*1 = Pierson, Elizabeth C., Jan Erik Pierson, and Peter D. Vickery. A Birder’s Guide to Maine. 1996. Down East Books: Camden, ME.

*2 = https://www.maine.gov/ifw/hunting_trapping/hunting/alert_waterfowl_hunters.htm

For more information on the status of BAGO in Maine, see:
https://www.maine.gov/ifw/pdfs/species_planning/birds/barrowsgoldeneye/speciesassessment.pdf

Additional Reference:
Eadie, John M., Jean-Pierre L. Savard and Mark L. Mallory. 2000. Barrow’s Goldeneye (Bucephala islandica), The Birds of North America Online (A. Poole, Ed.). Ithaca: Cornell Lab of Ornithology; Retrieved from the Birds of North America Online: http://bna.birds.cornell.edu.bnaproxy.birds.cornell.edu/bna/species/548 doi:10.2173/bna.548

A (Very) Early Spring Week in Review

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Our Saturday Morning Birdwalk surveyed the waterfront in Freeport and Yarmouth. On Sunday, Kristen Lindquist and I enjoyed an epic white-winged gull show in Portland, before working our way around the Cape Elizabeth shoreline. Then, on Monday, we birded from Biddeford Pool through Scarborough Marsh with Snowy and Great Horned owls, Rough-legged Hawk, and Ruddy Turnstones among the many highlights.

Further south, Jeannette and I covered Kittery through Wells, as is our tradition on the first Tuesday in March. Another exceptionally productive day was enjoyed, including two more Snowy Owls and a Common Eider of the northern subspecies, borealis.

Wednesday was spent dealing with various car issues and seed delivery, so birding was limited to the woods near our house, and the feeders of course. Same for Friday, where at Hedgehog Mountain Park, a mere 7 species was actually the most that I have detected in a couple of months there. In between, I was back in Portland and Westbrook on Thursday, and although the Westbrook riverfront was a disappointing, the continuing white-winged gull show in Old Port more than made up for it.

While “new arrivals” were few and far between this week as bitter cold continues, there were definitely signs of the season. Waterfowl are obviously on the move: Brant, Canada Geese, Mallards, and American Black Ducks are returning in numbers, while the concentrations of seaducks, especially all three scoters, was greatly reduced as these birds have begun to disperse – if not actually migrating north.

For the first week of March, I recorded very few “first-of-years” this week: Great Horned Owl, Yellow-rumped Warbler, and Fox Sparrows. Of those, only the sparrow is likely a true migrant; the owl is a resident, and the warbler likely wintered locally. American Robins were definitely on the move, however, with several flocks noted moving northbound (at least at the given time), and American Tree Sparrows also seem to be on the go.

New reports of Snowy Owls – especially inland – likely included northbound migrants. While all three of the individuals that I saw this week seemed to be birds that were continuing in a specific area for several weeks or more now, the fact that Kristen and I only saw one bird in a very thorough search at Biddeford Pool (four had been present for a couple of months now) suggests birds are already departing. Northern Shrikes – such as the one that briefly visited the yard here at the store on Thursday (our second of the season) are also likely migrating right now.

In the woods there is a different story, however, as even the local residents are a little less active vocally right now than we would expect. I have yet to hear a Brown Creeper sing – although I am seeing them on regular basis – and Golden-crowned Kinglets remain very few and far between. And other than goldfinches and resident House Finches, finches remain virtually non-existent.

But all of this is about to change, and my guess is that it will change rather rapidly. In fact, with the winds turning south today, I wouldn’t be surprised if a few Turkey Vulture and Red-winged Blackbird reports trickle in this weekend. And once the snow really begins to melt (especially to our south), expect those floodgates to really open! (Any day now…any day now…)

Snowy Owl, The Cliff House, York, 3/4/14. As you have seen on this blog, our store’s Facebook and Flickr pages, etc, most of our Snowy Owl photos this winter have been of relaxed birds, often with their eyes closed. Few have been “perfect” shots, whether in lighting or resolution. And we’re proud of that! To us, the birds ALWAYS comes first, and we pride ourselves in minimizing any chance at disturbance. Unfortunately, this bird was sitting close to the parking lot and we spooked it before we knew it was present. A pair of crows likely also affected the bird’s immediate response. As it flew away from both us and the crows, Jeannette snapped some photos, as the bird first flew straight out to sea – thereby ditching the crows – before returning to land a short distance away. We backed off and left it alone. With a lot of unethical and selfish behavior occurring – as always – around charismatic owls around the country, we support the idea that the circumstances of photos be explained when it shows a behavior that may have been modified by our presence or behavior.

A White-winged Gull Convention in Portland Harbor

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On Sunday, Kristen Lindquist and I worked Portland Harbor for gulls. In my usual routine, I started at the Maine State Pier and worked my way west, checking all of the piers and roosting locations in Old Port. I was pretty happy with the 4 first-winter Glaucous Gulls and a healthy handful of Iceland Gulls from the state pier, and we continued to see Iceland Gulls here and there as we continued along.

It was a good day for gulls in the harbor, but we didn’t realize just how good it was until we got to the end of the “Fish Pier.” There, everywhere we looked we saw white-winged gulls! Out by the dredging barges there were white-winged gulls. Feeding at the rips around the channel markers there were white-winged gulls. And all around the fish pier there were white-winged gulls!

I was very conservative in my counts, and yet tallied an exceptional 12 first-winter Glaucous Gulls – an all-time state high count for me. But it was the abundance of Iceland Gulls that stole the show; 4 adults (all with completely different wing-tip patterns of course), at least three 2^nd-winter, and an astounding (for southern Maine, anyway) THIRTY-TWO 1^st-winter birds. With that many, it was not surprising that the whole range of variation of “Kumlien’s” Iceland Gulls was to be seen, but try as I might, I couldn’t find a single bird that even allowed for an attempted stringing of a Thayer’s.

Despite starting the day by saying, “I am not taking any more first cycle Iceland Gull photos this winter,” with this many birds around, I couldn’t help myself. Here’s a selection of photos, starting with two phone-scoping using an iPhone 4S, Phone Skope adapter, and a Zeiss Diascope FL, followed by “better” photos using my Nikon D80 with a 300mm lens.

At the aforementioned outflow pipe.

1st cycle Iceland Gull feeding storm-petrel style.

1st/2nd cycle (L) and 2 1st-cycle “Kumlien’s” Iceland Gulls (R), with a dark 1st winter Herring Gull for contrast.

Light and darker 1st-cycle “Kumlien’s” Iceland Gulls.

Worn, late 1st Cycle or early 2nd Cycle “Kumlien’s” Iceland Gull.

Adult “Kumlien’s” Iceland Gull.

Adult and 1st/2nd Cycle “Kumlien’s” Iceland Gulls.

1st cycle and adult “Kumlien’s” Iceland Gulls.

Wait, that’s not an Iceland Gull…sorry, I got distracted…

After second breakfast, we checked in at Mill Creek Cove, where the outgoing tide was attracting gulls to the mouth of the creek as usual. With birds heading to and from the Old Port, we didn’t add to our earlier counts, but there were at least 4 1^st-winter Iceland and 2 1^st-winter Glaucous Gulls present. Oh, and this rather confiding female Green-winged Teal was dabbling with the Mallards.

showing a little more green speculum than usual on one side.

Then we worked the Cape Elizabeth shoreline, highlighted by 3 Greater Scaup at Kettle Cove, 11 Brant at Dyer Point, and these 28 balls of awesomeness (aka Harlequin Ducks; phone-scoped photos).

]

But back to those gulls…why so many? While the number of Herring and Great Black-backed gulls (and the expected relatively small number of Ring-bills) were average (at least by recent winters’ standards), this is by far the most total white-winged gulls that I have seen in PortlandHarbor in the 13 years I’ve lived here. Some of these gulls are probably northbound migrants, but clearly there was something more at play here.

For one, there’s a dredging operation ongoing in the main channel of Portland Harbor. While we didn’t see any gulls obviously foraging on the dredge spoils being pumped into the barge, or immediately around the buckets scooping up the muck, there were birds standing around on the new moving “islands.” I wondered if a lot of these gulls were following/riding the barges in from where they are dumping the dredge spoils seven miles offshore. But in today’s Portland Press Herald, I read that the occasional dynamiting of underwater bedrock would kill some fish, and then the “seagulls’ (sic… ahem!) were feeding on the dead fish. That would certainly augment the already-occurring food sources in the harbor.

But most of the Iceland Gulls today were centered around the outflow pipes of various lobster-related facilities, as usual. Meanwhile, the high tide limited roosting and foraging opportunities along the coast, and here in the harbor.

So my guess is that the time of year (migrants), the dredging operation, and the tides all helped to greatly increase the volume of white-winged gulls present today to numbers not seen in recent years – at least not since Portland had a thriving year-round fishing industry. Obviously, this is just conjecture, but whatever made it happen, I was happy to be there to enjoy it!

Also gull-watching:

Scarborough through South Portland: Signs of Spring!

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I decided to blog about my birding outing today, if only to give people a little hope that spring is around the corner. As temperatures plummet once again this week, perhaps the knowledge that spring migration has actually begun will provide a little comfort…and warmth.

Phil McCormack and I birded from Scarborough Marsh into South Portland today, enjoying a very spring-like day (highs in the mid-40’s) and some great birding. A few “new arrivals” and continuing wintering species combined for a respectably tally of 54 species without trying – and with ending our birding at 1:30.

We began on the Eastern Road Trail. Within mere seconds of saying to Phil, “I expect some early migrant waterfowl like pintail and Gadwall today,” three drake Northern Pintails came cruising by. I love the look of pintails in flight; they’re so elegant. The long tail, thin neck, and long, relatively narrow wings suggest a miniature loon, and they have one spiffy pattern. The sense of spring really kicked in when a Killdeer sounded off and came cruising in to an exposed muddy bank – my first of the spring, and a bit on the early side considering the abundant snow cover.

A pair of Gadwall (first of the year – although they were actually southbound) flew over Pine Point, as did at least one Snow Bunting. Twenty-eight Common Loons were in the channel, while over on Western Beach, the dredging operation was pumping sand onto the beach, collecting a nice concentration of gulls. Sifting through them yielded two 1^st-winter Iceland and 1 1^st-winter Glaucous Gull. American Robins – overwintering birds, not northbound spring migrants – were widespread today, with a high count of 50-75 around Seavey’s Landing.

Rounding the north side of the marsh, we checked a couple of neighborhoods for frugivores, before arriving at Kettle Cove. At Two Lights State Park, a raft of 150 Black Scoter loafed offshore, with 18 Harlequin Ducks in the surf. A Porcupine at the edge of the parking lot was the star of the show, however.

Ten more Harlequin Ducks and a Northern Shrike (an immature; my 6^th of the winter) at Dyer Point were signs of the continuing winter, but a Black Guillemot in full breeding plumage was suggestive of the advancing season.

Moving into South Portland, a Red-bellied Woodpecker was among the usual denizens at Trout Brook Preserve, but Mill Creek and Mill Creek Cove were hopping! 286 Mallards and a growing legion of American Black Ducks were joined by a single drake Green-winged Teal, our third “FOY” of the day! Meanwhile, the gull turnover in the cove eventually amounted to eight 1^st-winter Iceland Gulls and two or three 1^st-winter Glaucous Gulls.

But perhaps our last stop provided the “bird of the day:”
…the fried chicken and waffle from Hot Suppa!

Gull Identification Workshop Wrap-Up

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You may have noticed that my blog has been a little quiet in the last couple of weeks. Mostly, that has been due to my birding being mostly about photographing gulls every chance I get! And in between, accumulating and sorting photos from friends. What was planned to be a 95-slide PowerPoint program became an exhaustive (literally), 180+ slide dissertation. Not only was I impressed by how many people signed up, but how many stayed until the bitter end – even though I strongly urged people who were new to this to depart before the section on Thayer’s Gulls and hybrids!

Come Sunday morning, 13 people joined me for the field session of the two-day workshop – no doubt reduced by the 12-degree temperatures that greeted us to start the day. We began with close studies of the various ages of Ring-billed Gulls at Back Cove…aided by a little “incentive,” of course.

Sorting through Herring Gulls was up next, and then we made our way over to the Fish Pier in OldPort, for some “real” gulling. And it did not disappoint. The endless variation of “Kumlien’s” Iceland Gulls was readily apparent with eleven 1st-winter, two 2^nd-winter, and 2 adults – many of them close and in direct contrast with each other. A total of three 1^st-winter Glaucous Gulls were added to the mix, along with ample opportunities to practice aging Herring and Great Black-backed Gulls.

I really couldn’t ask for anything more…well, I could, and of course, did. And shortly thereafter a particular gull-of-interest put in an appearance. Widely being reported as a Thayer’s Gull, this odd individual was a bird I wanted to study closely (Jeannette and I only saw it in the distance on Tuesday), and it was indeed a very instructive bird for a gull workshop. Having been looking at thousands of gull photos over the last two weeks, I have been a bit negligent with studying and addressing this bird. Besides, I had not seen it in the field and even some very good photos are of secondary value to time with a bird in the field.

Doug Hitchcox got some decent photos of the bird on Sunday, but the best photos to date have been from Noah Gibb. I will therefore use these photos as our reference.

One of my take-home messages during my workshop is that a good “guller” has to be able to say “I don’t know,” and leave some individuals as “Gull sp.” This is probably the best answer to this bird, but what I think we can say is that this cannot be “counted” as a Thayer’s Gull.

For better or for worse, Thayer’s Gulls on the East Coast receive extensive scrutiny. Birds that would be passed over in coastal California are analyzed to death in New England. Likewise, birds that look like “Kumlien’s” Iceland Gulls on the West Coast get extensive scrutiny, while here in Maine we pass some of these off as typical variation. And I think this is a good thing – rare birds are rare, and vagrants to opposite coasts should warrant extreme care.

Therefore, this current rash of “Thayer’s Fever” – a common affliction of East Coast gull-watchers – needs to be tempered a bit. There is a reason that there are only two accepted records ever in Maine of this challenging, and variable, species. Therefore, extreme caution is necessary when placing this desirable label on funky gulls.

Like the Shawmut Dam gull reported by many as a Thayer’s a few weeks ago, I believe that the Portland “Thayer’s” is well outside the range of variation of what we can accept as a bona-fide Thayer’s Gull on the East Coast. While there are a number of characteristics that suggest this bird could be a Thayer’s, there are a number of significant “strikes” against it. While I think the Shawmut Dam birds suggests a Iceland-Thayer’s intergrade (I am not going to get into the muddled and controversial taxonomy here today), the Portland bird looks to me more like an abnormally dark-winged “Kumlien’s” Iceland Gull. Sure there could be Thayer’s genes in there…which there probably are in all Kumlien’s Gulls . . .oh wait, I said I wasn’t going to get into taxonomy. Never mind. Moving on.

So where was I? Oh yes… while the dark secondary bar (and upon closer inspection showing a distinct contrast between dark outer webs and pale inner webs) and the similarly distinctly two-toned outer primaries are important Thayer’s features, there are a serious amount of non-Thayer’s like features shown by this bird. Again, like the Shawmut Dam bird, there are just too many things “wrong” with this bird to safely label it a Thayer’s Gull, in my opinion.

First and foremost, there’s the Portland bird’s incredibly white overall appearance. While a first-summer or some 2^nd-cycle Thayer’s can look this pale overall, this bird IS a first-cycle bird. Since no second-cycle feathers are evident (the bird has a very uniformly-marked plumage typical of a bird less than a year old) and none of the feathers suggest any abnormal wear, we cannot call this anything other than a 1^st-cycle bird. It is not overly worn, and bleaching would affect all of the most-exposed parts of the bird – like the mantle, upperwing, and especially the primaries (and it is those primaries that are abnormally dark, not pale). The mostly-dark bill is also highly suggestive of a 1^st-cycle bird, as is the fairly dark eye. Perhaps that is a bit of an over-simplification, but for now, that should suffice.

With that (fairly well) established, we can look at this bird more closely. Again, those outer primaries and “picket-fence” secondaries are very Thayer’s-esque. Unfortunately, the similarities pretty much end there. The bird is not very big, and similar in size to most of the “Kumlien’s” Iceland Gulls we see it with. It is also has the somewhat short and thin-billed appearance, with a gently rounded head and large eye that are typical of Iceland Gulls; this bird does not get any subjective gestalt points. More importantly, in my opinion, are more tangible issues, from head to tail (and in no particular order of importance):
–          The overall pale appearance to the entire bird give that “white” impression at a distance; Thayer’s (THGU) usually look “dirtier” or even “brown.”
–          The pale face doesn’t have that nice dark smudge that we like to see on THGU.
–          The bill is clearly becoming pale at the base already. The pattern looks good for Iceland (ICGU), and is certainly on one end of the bell curve for THGU.
–          The tertials are wholly marbled, and look perfect for ICGU. “Classic” THGU show mostly dark tertials with marbled distal ~1/3^rd or so.
–          On the folded wing (and on some flight shots), the primaries definitely have dark outer webs, but they also have a pale fringe that not just rounds the tip, but continues down the length of the most of each feather’s outer web. That is more consistent with dark-winged “Kumlien’s” Gulls.
–          While the tail is mostly dark, the bases are fairly extensive white with lots of marbling. The extent of marbling is a good fit for ICGU.

While absolutely none of these factors eliminate a THGU on their own, the sum of all of them taken together makes for a most unusual THGU. Considering the range of variation in “Kumlien’s” ICGU combined with hybridization – and by some accounts extensive intergrading – put this bird well outside the possibly-artificially-delineated box that we currently label a Thayer’s Gull. At the very least, this is far short of a bird that could be “good enough” to constitute a third state record.

Can you see why I was so impressed that so many people stayed to the bitter end of my program on Saturday (and Sunday, for that matter!)? So there, I said it – the OldPort mystery gull is not a “good” Thayer’s, despite the wishes of many-a-birder! Sorry.

So anyway, after the Fish Pier, we ventured over to Mill Creek Cove in South Portland. Two more 1^st-winter Iceland and a 1^st-winter Glaucous were present (some are all likely birds we saw on the other side of the harbor) to reinforce our new-found skills.

And finally, some of the group joined me for a field trip extension over to Westbrook to look for the “Westbrook Gull,” a bird that, as I explained in the workshop, still defies identification and therefore is also quite instructive. Unfortunately, it was not present today (I see it less often on the weekend), but we finished up with a great showing for here of 4 Iceland Gulls (three 1^st-winter and 1 2^nd-winter) with the Herring and Ring-billed Gulls near the falls. Meanwhile, while we did look at other birds all day, the open water behind downtown Westbrook yielded the surprise of the day – a pair of Ring-necked Duck that has just been found by Colin Chase. Whether they are southbound, northbound, are somewhere in between, this was a great winter find, and a nice way to bring our workshop to a close.

Some people added Iceland and Glaucous Gull to their life list this day – and I think one person deleted Thayer’s Gull from their life list! – but more importantly, everyone left with a little more knowledge about how to identify gulls, and more importantly, hopefully a new-found appreciation for these remarkable, adaptable, and successful creatures.

With the success of this weekend (and some refinement due to the slide show portion of the program), I think it is safe to say that you can look for this workshop again in the future. Until then, good gulling everyone!

2014 Maine State List Predictions

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About this time each year on my blog, I make two lists of predictions for the coming year in Maine birding. The first is my (somewhat-educated) guesses of the next 25 birds to be added to Maine’s state list. The second is my predictions of the next 25 birds that I will add to my own personal state list.

But first, let’s recap 2013. This past year, only one new species was added to the Maine list (although there was a report of a Rock Wren in Washington County this fall; I know little of the details): Eurasian Collared-Dove that appeared at a Falmouth feeder on 5/28. This was my #1-ranked bird for each of the last two years. I was hardly going out on a limb with this one, as this bird continues to rapidly colonize North America. While reports in New England continue to be sparse, we can only foresee these becoming much more regular and eventually colonizing much of Maine.

For 2014, I added Neotropical Cormorant to the list, based on the expanding population in the interior of the continent and increasing vagrancy to distant corners of the continent. I also replaced Bermuda Petrel with Barolo Shearwater. Recently split from Little Shearwater, this pelagic waif has been detected near the mouth of the Gulf of Maine. It seems it’s only a matter of time before a research vessel or even a whale-watch trip (especially following a tropical system) finds one within Maine waters. I also shuffled around a few species based on increasing populations and/or trends in vagrancy.

So here goes my Top 25 Next Species for Maine list:
1)   California Gull
2)   Ross’s Gull
3)   Graylag Goose
4)   Roseate Spoonbill
5)   Little Stint
6)   Fieldfare
7)   Hammond’s Flycatcher
8)   Black-chinned Hummingbird
9)   Spotted Towhee
10) Audubon’s Shearwater (on “hypothetical” list)
11) Neotropic Cormorant
12) Black-tailed Gull
13) Anna’s Hummingbird
14) Redwing
15) Allen’s Hummingbird
16) Barolo Shearwater
17) Long-billed Murrelet
18) Common Ground-Dove
19) Western Wood-Pewee (my gut still tells me a bird I found on Monhegan last fall was actually this species, but a good voice recording is going to be necessary to confirm identification).
20) Spotted Redshank
21) Yellow-legged Gull
22) Brown-chested Martin
23) Bermuda Petrel
24) Gray Flycatcher
25) Common Scoter

As for me personally, 2013 was a productive year. I added eight birds to my state list (with last year’s rankings):
a) Hoary Redpoll (#2), Bowdoinham feeder, 2/4.
b) Northern Lapwing (honorable mention), Range Hill Road, Poland, 5/6.
c) Acadian Flycatcher (#22), FortFoster, 5/21.
d) Mew Gull (#21), Thomaston, 8/8.
e) Black-necked Stilt (honorable mention), Eastern Road, Scarborough Marsh, 6/23.
f) Kentucky Warbler (#12), East Point, Biddeford Pool, 9/9.
g) Bell’s Vireo (#23), Bailey Island, Harpswell, 10/23.
h) Hermit Warbler (honorable mention), Harpswell feeder, 12/12.

Of those, only the Acadian Flycatcher and Bell’s Vireo were “self-found,” which is always the more fulfilling way to add to one’s state list. I’ll have to do better with this in 2014. Unfortunately, it brings my self-found list down to 88.7% of my total state list (363).

I also “dipped” on the St. George American White Pelican in September, waiting until it was no longer being seen before going to look for it. I chased enough in 2013, but I could have chased much more. In fact, I never made the effort, was away, or just didn’t get lucky enough for some other potential state birds (American Three-toed Woodpecker, the collared-dove, Great Skua, Yellow-headed Blackbird, and Bullock’s Oriole all immediately come to mind).

There are lots of options for birds to add to my own list in the coming year(s), so narrowing it down to 25 and ranking them is really just a guessing game. Of course previous records and trends are taken into account.
1) Slaty-backed Gull
2) American Three-toed Woodpecker
3) Great Skua
4) Eurasian Collared-Dove
5) Gyrfalcon
6) Graylag Goose
7) Say’s Phoebe
8) American White Pelican
9) Western Grebe
10) Boreal Owl
11) Fork-tailed Flycatcher
12) Tundra Swan
13) Yellow Rail
14) Ivory Gull
15) Franklin’s Gull
16) Sabine’s Gull
17) Black-bellied Whistling-Duck
18) California Gull
19) Calliope Hummingbird
20) Ross’s Gull
21) Roseate Spoonbill
22) Sage Thrasher
23) Hammond’s Flycatcher
24) Yellow-headed Blackbird
25) Loggerhead Shrike

So there ya have it. Now, let’s go birding and see what 2014 will bring!

A HERMIT WARBLER in Harpswell – BELATED.

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A warbler arrived at a Cundy’s Harbor, Harpswell feeding station on November 18th. Any non-Yellow-rumped Warbler is exciting in Maine by the end of November, but most turn out to be Pine Warblers – a rare but regular “half-hardy” that often winters outside of its usual winter range, and often takes advantage of feeders to do so. This particular bird was identified as a Black-throated Green Warbler – an outstanding late-November record but not one without precedence. Intriguingly, on the first day, it appeared with a second warbler that may have been a Black-throated Blue Warbler, but that bird was not seen again. However, on December 11^th, the homeowner brought in an iPhone snapshot of their visitor to the store to confirm the identification. Distant and blurry through a window, the bright yellow face and black beady eye immediately stood out. “Um, can I come over?” I inquired.

I arrived at 6:55 the next morning, as the bird was regularly being seen just after 7. And sure enough, it showed up at 7:02! It remained for just a few minutes, eating hulled sunflower seeds at the feeders with a small band of Black-capped Chickadees. And as I surmised, this was definitely a Hermit Warbler – only the second-ever to be seen in Maine!

The light was low, and the feeders were still in the long, early-morning shadows, so my photos were pretty poor. I asked to stay a little longer, and after a brief visit at 7:35, the bird returned and fed extensively between 7:55 and 8:03, in which time I was able to photograph the bird extensively.

The bright yellow face was readily apparent, which sets off the seemingly-large dark, beady eye. There’s a very limited amount of dusky green on the auriculars, and the greenish crown tapers to a “widow’s peak” on the forehead. The back is greenish-gray and the gray wings are set off by two bold whitish wingbars and pale-fringed secondaries. The throat was almost wholly yellow, except for a small white chin and a couple of dusky smudges.

I aged this bird as an immature female due to the overall relatively drab colors and lack of black almost anywhere in the plumage. However, I was not familiar with this plumage in the field, and some photos online and in some books concerned me a bit, so I sent a couple of the photos to a friend in California for confirmation. He forwarded them to Kimball Garrett, the Ornithological Collections Manager for the Natural History Museum of Los Angeles County, and the co-author of Warblers in the Peterson field guide series.

His response was straightforward, it was an immature female, born this past summer: “I certainly wouldn’t have called it anything other than a female Hermit Warbler. The yellow across the uppermost throat is fine for female Hermits (shown to various degrees in all 3 of our skins of HY [hatch year] females). I would worry about prominent streaks on the flanks and undertail coverts, but I really see almost nothing there (and what there is could be explained by darker feather shafts that sometimes lend the impression of streaks).”

This is truly a remarkable record. The first state record, found by Scott Surner on MonheganIsland between September 29^th and October 1st was seen by only a handful of birders – not including yours truly despite my presence on the island at the time, and eventually much effort, but that’s a long story for another day. Breeding in the mountains of the Pacific Coast from the Olympic Peninsula of Washington south through the Sierra Nevada range to about south-central California, Hermit Warblers normally winter in southwestern Mexico through the mountains of Central America down to Nicaragua.

Therefore, for this bird to arrive in Maine it likely had to fly 90-degrees in the wrong direction. While “180-degree misorientation” in which birds fly north when they “should” be flying south (for example) is a fairly well-established pattern that results in far-flung vagrancy, 90-degree misorientaton appears to be even rarer. In other words, this bird was not “blown here,” (although it could certainly have been facilitated in its arrival by a strong storm or persistent westerly winds) but was somehow “miswired” to fly in a very wrong direction. Although it is fun to ponder (at least for me!), how and why vagrants arrive in certain places, we obviously can’t know for sure what mechanism(s) delivered this bird to a feeder along the shore in Harpswell, Maine.

As I enjoyed this bird, and a wealth of other activity at the feeders, the homeowners and I discussed the significance of this sighting. Of course, I broached the topic of “visitation,” as many birders would love the opportunity to see this bird as well. I was exceptionally grateful for the chance to see this fantastic bird, and I knew other birders would be grateful as well.

Sometimes, rare birds at feeders are “easy” to share, such as when they are at a feeder visible from a road with ample parking nearby. For a variety of reasons, some birds simply cannot be made public. After much discussion, it was decided that this bird would not be publicized. A small, private dead-end dirt road with virtually no parking, close neighbors, and no visibility from the road made this a challenge. Simply put, you had to be in the kitchen…and with life schedules and all of the above considerations, it was, unfortunately, in the best interest of the homeowners to keep this bird under wraps even though everyone regretted this conclusion.

The bird was seen regularly through the 13^th of December, but after the homeowners were out of town for the weekend, they came back on the 16^th and have not seen the bird again. A heated birdbath and live mealworms were deployed upon their return, but the bird is nowhere to be found. Seeing that it has now moved on, I post this blog to document this “Mega” rarity for the permanent record, as per my agreement with the lucky homeowners who were graced by this special visitor from the “other” coast.

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Maine Birding Field Notes

Trip Reports, Essays, Rare Bird Reports, and More from Derek Lovitch's and Freeport Wild Bird Supply's birding in Maine and beyond.

Category Archives: Birding in Maine

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The Decline of Barrow’s Goldeneyes in Freeport and Beyond.

A (Very) Early Spring Week in Review

A White-winged Gull Convention in Portland Harbor

Scarborough through South Portland: Signs of Spring!

Gull Identification Workshop Wrap-Up

2014 Maine State List Predictions

A HERMIT WARBLER in Harpswell – BELATED.

Random Photos Using SLR and Phone-scoping Techniques Over the Last Few Days.

Southern York County CBC