Last evening and this morning marked the beginning of VCE's 27th
consecutive field season studying the Mansfield ridgeline's breeding
bird population. I ventured up solo, arriving at 5:30 pm, to conditions
that were about as benign as they could possibly be up there: 68 degrees
F, calm and clear, with virtually no black flies. I set 8 mist nets and
banded until dark, hearing the first Bicknell's Thrush (BITH) call at
5:58. Vocal activity was solid, with good numbers of the usual suspects,
and 3 singing Purple Finches, an unusually high number. The dusk chorus
itself was unimpressive, but a few BITH continued singing until 9:30,
well after dark, and I may have heard a flight song or two. Seven birds
found their way into the nets: 2 Swainson's Thrushes, 1 Am. Robin, 1
Yellow-rumped (Myrtle) Warbler, 2 White-throated Sparrows, and a female
Purple Finch with a fully-developed incubation patch.
The
wind came up overnight and was still brisk from the SW when I returned
at 4:15 am to open nets (adding one for a total of 9). Activity started
slowly, but picked up nicely and was steady until I closed nets at
10:00, at which point wind had mostly dropped and the sun was hot. The
undisputed banding highlight was a pair of White-winged Crossbills in a
net together -- I had not seen or heard any to that point, so it was
quite a surprise to come upon them. I later heard a single bird calling,
but they certainly are not all over the ridgeline by any means.
The morning's banding totals:
Yellow-bellied Flycatcher 1
Red-eyed Vireo 2
Ruby-crowned Kinglet 1 (there were 2 males singing all morning around the upper parking lot)
Bicknell's Thrush 4 2 newly-banded birds, 2 return females from previous years (one banded in 2014, one in 2016)
American Robin 1 female with full incubation patch
Blackpoll Warbler 1
Yellow-rumped Warbler (Myrtle) 5
Purple Finch 1
White-winged Crossbill 2 female with regressing brood patch; may not have nested locally
View this checklist online at
https://ebird.org/view/checklist/S46198634
I
was struck by the complete absence of Winter Wrens (I didn't hear a
single bird sing, which is just about unprecedented), and near absence
of juncos (I finally heard one male sing). VCE will start our full
operation next week, with weekly overnight visits through July.
As always, it was rejuvenating to be back up there!
Chris
________________________
Chris Rimmer
Vermont Center for Ecostudies
PO Box 420 | Norwich, Vermont 05055
802.649.1431 x202
http://vtecostudies.org/