Every other year, I have the pleasure of spending a week on Monhegan Island in the fall with a tour group for WINGS. Unlike my annual weekend tour through the store, this allows us to fully experience multiple changes in the weather and the resultant changes in bird numbers and diversity.

This year’s tour, which took place from September 19-25, recorded 116 species (including 5 seen only from the ferry or while we were on the mainland), including 18 species of warblers. Both tallies were a little low, as the weather was often simply “too nice” for much of the week, and fewer birds found themselves on the island. But as usual, great looks at a wide variety of common birds, spiced up by a smattering of rarities, made for a wondrous week of birding.

Birds from any direction are possible at this migrant trap, and this week, we experienced visitors from the south (e.g. Orchard Oriole), west (e.g. Lark and Clay-colored Sparrows), and even the east (Cory’s and Great Shearwaters). While the allure of a “Mega” kept us searching, local rarities kept us entertained. From Peregrine Falcons overhead to a Sora at our feet, you never quite know what’s around the next corner. Even the “slow” days offered new birds, as our relaxed and casual pace simply allowed us the opportunity to enjoy whatever happened to be in front of us. And the overall weather and food was unbeatable – adding to the mystique of this truly special place.

While daily turnover in the island’s birdlife is expected during the peak of fall migration, a shift in the weather can yield a distinct change in the birds we see. Several clear and calm nights allowed migration to continue unimpeded, while a northwesterly wind on the night of the 22^nd yielded numerous birds overhead in the morning – including our first big push of Yellow-rumped, Palm, and Blackpoll Warblers. However, no fallouts – the stuff Monhegan birding legends are made of – occurred this week as unseasonably warm and relatively pleasant weather continued. It might not have produced massive numbers of birds, but it sure made for comfortable birding!

A couple of nights of southwesterlies produced dreams of vagrants, and likely resulted in the arrival of several “southern” birds such as Orchard Oriole, Yellow-throated Vireo, and Blue-gray Gnatcatchers. In contrast, by week’s end, the first White-crowned Sparrows, Dark-eyed Juncos, and other late-season migrants from the north began to appear.

“Drift migrants/vagrants” such as Lark Sparrows and Clay-colored Sparrows, along with a number of Dickcissels, all normally found further west, were present and accounted for as usual out here.

Lark and Clay-colored Sparrows

Two immature Yellow-crowned Night-Herons (perhaps part of a small scale northward irruption into the New England coast) stood guard in the early mornings at the Ice Pond.  Later in the week, the world’s most confiding Sora appeared, spending one afternoon foraging in the open at the pond’s muddy edges – this year’s drought had reduced it to a mere muddy puddle.

Sora and a Blue Jay

A Connecticut Warbler was one of our finds of the week, heard by all, seen by some on two occasions; an “exclusive” for our group. A late Olive-sided Flycatcher was another treat, as was the Black-billed Cuckoo that we caught up with thanks to the efforts (and game of charades) of friends – exemplifying the spirit of the Monhegan birding community shared by most.

Calm winds and the season produced excellent seawatching conditions on the 21st, and from the high cliffs of White Head, we observed Cory’s Shearwaters (once a rarity this far north and east) and Great Shearwaters – with massive rafts of one or both just beyond the realm of identification– and a few Minke Whales. Always a highlight in the fall is the raptor passage, which most of the week was limited to numerous Merlins, scattered Sharp-shinned Hawks, and the occasional Peregrine Falcon, On our last day, a light northerly wind also ushered in a steady movement of Northern Harriers and Ospreys, along with another surge of falcons.

And then there was the food: exquisite fine dining at the Island Inn, the best pizza in Maine at the Novelty, and a candlelight lobster dinner – with lobsters brought in just for us! – at the rustic Trailing Yew, complete with a lobster ecology and human ecology lesson and step-by-step instructions. And that’s in addition to the limitless lobster scrambled eggs at breakfast every morning!

Highlights for our group each day were as follows, along with a brief synopsis of the overnight flight and the day’s weather.

9/19: Balmy Days ferry from Boothbay Harbor:
– 1 Long-tailed Duck (FOF; early)
– 1 Pomarine Jaeger (harassing Northern Gannet)
– 1 Cory’s Shearwater

Island:
– A few light showers, drizzle, and fog occasionally lifting on light and variable, and rather warm winds throughout the day. Calm and foggy at dusk.
– 1 female Orchard Oriole (new)
– 1 Lark Sparrow (continuing)
– 1 Clay-colored Sparrow (continuing)
– 1 Carolina Wren (continuing)

Like everywhere in Maine this fall, Red-breasted Nuthatches were abundant.

Ichneumon wasp sp on window screen.

9/20:
– Sunrise: 62F, dense fog, very light southeast. Light migration likely overnight, but hard to decipher on the radar due to fog.  Fog coming and going throughout the day, warm and humid, very light southeast.  Light south and fog at dusk.

Another relatively “slow” day, but these were the highlights:
– 1 CONNECTICUT WARBLER
– 2 juvenile Yellow-crowned Night-Herons
– 1 Blue-gray Gnatcatcher
– 1 Lark Sparrow
– 1 Clay-colored Sparrow
– 2 American Golden-Plovers
– 1 Cory’s Shearwater
– 1 Greater Shearwater
– 1 Carolina Wren

I tell people never to leave their binoculars behind when on Monhegan; you never know what you will see where. They also can come in handy for reading the fine print of menus!


Lark Sparrow

9/21:
– Am: 62F, mostly clear, calm. Light to moderate migration overnight on lt SW to W, but again intensity obscured by fog. Moderate-good morning flight overhead at dawn, with lots of new birds around. Hot and calm!  Clear and calm at dusk.

73 species on the day, including the world’s most cooperative Sora and some fantastic afternoon seawatching.

Highlights:
– 1 CONNECTICUT WARBLER
– 1 Yellow-crowned Night-Heron
– 3 Dickcissels
– 1 Clay-colored Sparrow
– 10 Cory’s and 12 Great Shearwaters plus 125 large shearwater sp.
– 2 Lesser Black-backed Gulls
– 1 Eastern Kingbird
– 1 Warbling Vireo
– 1 Sora
– 3 Minke Whales


Brown Thrasher on the Trailing Yew lawn

Sphinx moth caterpillar with parasitic wasp pupae

Merlins were all around

I’m not sure of this Rusty Blackbird left this particular group of yards for the rest of the week!


Afternoon seawatching from Whitehead.

Ending the afternoon with a Sora at the Ice “pond,”

9/22:
– AM: 59F, clear, very light NW. Light-moderate migration overnight on light SW to West to NW. Lots of birds overhead at sunrise (mostly Blackpoll, Yellow-rumped, and Palm Warblers), but less landing than expected as many birds kept going to the mainland. Relatively hot once again, with light and variable breeze. Clear and light South by dusk.

Highlights:
– 1 Yellow-crowned Night-Heron
– 1 Yellow-throated Vireo
– 1 Olive-sided Flycatcher
– 2 Dickcissels
– 1 American Golden-Plover
– 1 Clay-colored Sparrow
– 1 Blue-gray Gnatcatcher
– 1 Carolina Wren

American Redstart

Baltimore Oriole

Unidentified caterpillar- some sort of tussock moth?

9/23:
– AM: 65F, cloudy, lt-mod SW. Little to no visible migration overnight on lt-mod SW and rain approaching from north with dropping cold front. Drizzle and some light rain ending by mid-morning. Overcast but warm on light west winds. Increasing north by dusk.

A slow day of birding on Monhegan is better than a good day of birding most anywhere else with NINE new species for the week today.

Highlights:
– 1 Black-billed Cuckoo
– 2 Dickcissels
– 2 Cory’s Shearwaters
– 1 White-crowned Sparrow (FOF)
– pair of Pine Warblers were our 18th species of warbler on the week (a little low).

Here comes the front!

Dickcissel

Special delivery!

9/24:
– 50F, mostly clear, light N. Huge flight overnight on radar on diminishing N, but very little overhead at dawn. Although new birds had definitely arrived, it was not the huge flight that was hoped for. Apparently, there were more birds arriving on the south end of the island today (we always started on the west-north-west side) as reorienting migrants were returning to the island, or likely departing from the island’s north end. Diminishing N wind became light and variable before NW began to increase in the late morning, producing a good hawk flight.

With the hopes a big flight dashed by the lack of a westerly wind component by morning, we had a very casual and relaxed pace for our last day with some hawk watching taking precedence. Quite a few new birds were around, including several new species for out week’s list: Northern Harrier, American Pipit, and a single Semipalmated Plover. Cape May Warblers were particularly conspicuous today (at least 5), and as always it is painful to say goodbye. Good thing I’ll be back next weekend with the store’s annual weekend!

Highlights:
– 2 American Pipits (FOF)
– 1 Dickcissel

Ferry back to Boothbay Harbor:
– 1 Yellow-bellied Sapsucker (about half way, heading towards the mainland)
– 2 White-winged Scoters

Cape May Warblers were conspicuous the last few days



Boothbay Arrival

And now I’m off this afternoon for for three more days!