667. Dendroica virens 
BLACK-THROATED GREEN WARBLER. 5 inches 
Male. Above olive-green; sides of head yellow; wing bars and 
tail spots white. Below, throat and breast black ; belly white. 
Female. Similar, but colors duller; black on the throat more or 
less obscured. 
Common in Massachusetts in pine woods. Arrives about May 1. 
Song. “ 7rees, trees, murmuring trees,” given rapidly. 
Nest. In an evergreen tree in the woods. 
Breeds. Throughout New England. 
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