Brown-headed Cowbird

Steve Forman photographed a bee, a brown-headed cowbird, a ruby-throated hummingbird, and a willow flycatcher at Breakneck Hill Conservation Land in Southborough.

Steve Forman photographed a brown-headed cowbird, a gray catbird, a house finch, and a tufted titmouse in Framingham.

Debbie Howell photographed a fisher, a tree swallow, a brown-headed cowbird, a chipping sparrow, a palm warbler, eastern bluebirds, and an eastern towhee at SVT's General Federation of Women's Clubs...

Steve Forman photographed a brown-headed cowbird, an eastern bluebird, European starlings, and a red-tailed hawk at Breakneck Hill Conservation Land in Southborough.

Sharon Tentarelli photographed an American goldfinch, brown-headed cowbirds, a chipping sparrow, an eastern bluebird, and a red-winged blackbird in Sudbury.

Joan Chasan photographed this brown-headed cowbird in Framingham.

Steve Forman photographed a pair of brown-headed cowbirds at Breakneck Hill Conservation Land in Southborough.

Steve Forman photographed an American tree sparrow, a brown-headed cowbird, a house sparrow, a red-tailed hawk, and a white-throated sparrow at Breakneck Hill Conservation Land in Southborough.

Gail Sartori photographed a Canada goose, a Cooper's hawk, red-winged blackbirds, a brown-headed cowbird, and a yellow-rumped warbler at the Assabet River National Wildlife Refuge in Maynard.

Steve Forman photographed a brown-headed cowbird and a spotted sandpiper at Hager Pond in Marlborough.