Tree Swallow

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.

Dany Pelletier photographed a barn swallow, tree swallows, and a white-breasted nuthatch at Mill Pond in Maynard.

Jon Turner photographed a painted turtle, a tree swallow, an eastern bluebird, a turkey vulture, a broad-winged hawk, a brown-headed cowbird, an eastern phoebe, a red-bellied woodpecker, and a red...

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