Tree Swallow

Steve Forman photographed a black-capped chickadee and a tree swallows at Mass Audubon's Waseeka Wildlife Sanctuary in Hopkinton.

Steve Forman photographed a four-toothed mason wasp, a red-tailed hawk, a barn swallow, and a tree swallow at Breakneck Hill Conservation Land in Southborough.

Steve Forman photographed a tree swallow at Delaney Wildlife Management Area in Harvard.

Steve Forman photographed a common grackle, a tree swallow, a warbling vireo, a yellow-rumped warbler, and a yellow warbler at Hager Pond in Marlborough.

Jon Turner photographed a beaver, a picnicking eastern chipmunk, and tree swallows in Bolton.

Steve Forman photographed a killdeer, a tree swallow, and a yellow-rumped warbler at Hager Pond in Marlborough.

Steve Forman photographed a Baltimore oriole, a red-tailed hawk, a tree swallow, and a yellow-rumped warbler at Hager Pond in Marlborough.

Steve Forman photographed Canada geese and tree swallows at Hager Pond in Marlborough.

Steve Forman photographed a double-crested cormorant, a tree swallow, and a family of Canada geese at Hager Pond in Marlborough.

Steve Forman photographed this tree swallow at Little Chauncy Pond in Westborough.