Brown-headed Cowbird

Ron McAdow photographed tree swallows, brown-headed cowbirds, a pine warbler, a palm warbler, a ring-necked duck, a barred owl, a brown creeper, a white colored gray squirrel, a red-breasted nuthatch...

Steve Forman photographed an American robin, blue jays, a brown-headed cowbird, red-tailed hawks, a bald eagle, an American kestrel, and European starlings at Breakneck Hill Conservation Land in Southborough.

Steve Forman photographed an American robin, great blue herons at their nests, a bathing brown-headed cowbird, cedar waxwings, an eastern kingbird, a ruby-throated hummingbird, yellow warblers, a northern mockingbird, a...

Jon Turner photographed a brown-headed cowbird, a painted turtle, and a yellow-rumped warbler at Bowers Springs in Bolton.

Nancy Wright photographed a northern mockingbird, song sparrows, a brown-headed cowbird, a common grackle, an American robin, and a black-capped chickadee in Westborough.

Nancy Wright photographed a brown-headed cowbird, an eastern kingbird, an eastern wood-pewee, and a yellow warbler at Lake Chauncy in Westborough.

Steve Forman photographed this brown-headed cowbird at Breakneck Hill Conservation Land in Southborough.

Steve Forman photographed these brown-headed cowbirds at Breakneck Hill Conservation Land in Southborough.

Steve Forman photographed a brown-headed cowbird, a European starling, a red-winged blackbird, and a song sparrow at Breakneck Hill Conservation Land in Southborough.

Steve Forman photographed a brown-headed cowbird, an eastern kingbird, a northern flicker, and a scorpionfly at Breakneck Hill Conservation Land in Southborough.