Our real excitement of the week was this bird, a young male Golden-winged Warbler. Not a common bird in Massachusetts any time of year and one of very few (<5?) caught here in the last twenty years.
Along with orioles and other thin-billed warblers, Golden-winged Warblers will actively open their bills, as seen here, when you try squeezing it shut. As you might guess, this proves to be a very useful reflex if you are foraging in the canopy looking for insects and encounter curled up leaves.
Unfortunately, with habitat loss, hybridization with Blue-winged Warblers and being outcompeted by their more aggressive relatives, Golden-winged Warblers are in steep decline and one of the more threatened warblers in North America.
Along with orioles and other thin-billed warblers, Golden-winged Warblers will actively open their bills, as seen here, when you try squeezing it shut. As you might guess, this proves to be a very useful reflex if you are foraging in the canopy looking for insects and encounter curled up leaves.
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