Today Ed Hack and I birded at three locations in Windsor, VT: 1)  Lake  
Runnemede and Paradise Park, 2) vicinity of the intersection of Hunt  
and Marton Roads, and 3) prison farm on Marton Road.

At the prison farm, two Blue-winged Warblers were seen together, while  
another unseen bird, also of the Blue-winged/Golden-winged complex,  
was singing a "Blue-winged" song nearby. Another unseen bird of this  
complex was earlier heard singing a "Blue-winged" song about a quarter  
mile away. Thus, conservatively, there were at least 4 birds of the  
Blue-winged/Golden-winged complex present in the mid day today at the  
farm.

Birds of the Blue-winged/Golden-winged complex present special  
problems in identification and naming as discussed in
https://aba.org/birding/v37n3p278.pdf
          and
http://ebird.org/content/vt/news/golden-blue-winged-warbler-potpourri-how-to-submit-to-ebird/

Among recently arrived migrant species around Lake Runnemede/Paradise  
Park today were Least and Great Crested Flycatchers, Eastern Kingbird,  
Warbling Vireo, Wood Thrush, Gray Catbird, Nashville Warbler, Yellow  
Warbler, Chestnut-sided Warbler, Black-throated Green Warbler,  
American Redstart, Ovenbird, Northern Waterthrush, Common  
Yellowthroat, and Baltimore Oriole. Also, among other birds at Lake  
Runnemede, a House Wren was contesting with a pair of Tree Swallows  
for control of one of the nest boxes. Two female Common Goldeneyes  
were present on the Lake, as were some Ring-necked Ducks.

George Clark
Norwich, VT

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