Key words: behavior, Canada, foraging, indoors, migratory birds, Myrtle Warbler
, plasticity, Setophaga coronata coronata, unseasonable weather, Yellow-rumped Warbler
October is the best month for top-drawer rarities around Britain, and last week did not disappoint: a Siberian Rubythroat, Myrtle Warbler
and White's Thrush on Shetland, Scarlet Tanager in the Outer Hebrides, Eyebrowed Thrush on Orkney, and Ovenbird and Swainson's Thrush in Ireland.
There have been only 30 previous records in Britain and Ireland of the bird, also known as the myrtle warbler
The researchers could tell that the parasites had attacked locally because one bird, an infected myrtle warbler
, was too young to have migrated yet and the remainder, all black-capped chickadees, stay in Alaska year-round.
In autumn, the Yellow-rumped Warbler is composed of three sub-species; the Myrtle Warbler
(Dendroica coronata coronata), the Goldman's Warbler (D.
west of the Rockies (in some cases, all the way to the Pacific Coast), you might see orange-crowned warbler, Nashville warbler, olive warbler, Virginia's warbler, Lucy's warbler, yellow warbler, myrtle warbler
, Audubon's warbler, Townsend's warbler, hermit warbler, black-throated gray warbler, Grace's warbler, yellowthroat, yellow-breasted chat, MacGillivray's warbler, Wilson's warbler, and maybe American redstart.
The peak of molt frequency occurred prior to the peak of abundance for both subspecies groups, but that of the Myrtle Warbler
substantially overlapped its peak in abundance and represented 82.4% of individuals captured.
No HI or IgM positives were found in Myrtle Warblers
, Red-Winged Blackbirds, Common Grackles, and Savanah Sparrows.