Tree Swallow

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Tree swallows at Breakneck Hill Conservation Land in Southborough, photographed by Steve Forman.
Steve Forman photographed tree swallows at Breakneck Hill Conservation Land in Southborough.
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Tree swallows at Breakneck Hill Conservation Land in Southborough, photographed by Steve Forman.
Steve Forman photographed tree swallows at Breakneck Hill Conservation Land in Southborough.
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Tree swallows at Breakneck Hill Conservation Land in Southborough, photographed by Steve Forman.
Steve Forman photographed these tree swallows at Breakneck Hill Conservation Land in Southborough.
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A tree swallow at Broadmoor Wildlife Sanctuary in Natick, photographed by Cindy Winer.
Cindy Winer photographed a tree swallow at Mass Audubon's Broadmoor Wildlife Sanctuary in Natick.
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A beaver along the Sudbury Reservoir Trail in Southborough, photographed by Eric Crockwell.
Eric Crockwell photographed a beaver, a cotton-tailed rabbit, a tree swallow, and white-tailed deer along the Sudbury Reservoir Trail, part of the Boroughs Loop Trail, in Southborough.
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A tree swallow at Heard Farm in Wayland, photographed by Gail Sartori.
Gail Sartori photographed tree swallows and bobolinks at Heard Farm in Wayland.
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A great blue heron at the MacCallum WMA in Westborough, photographed by Nancy Wright.
Nancy Wright photographed a great blue heron and a tree swallow at the Wayne F. MacCallum Wildlife Management Area in Westborough.
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A tree swallow at Hager Pond in Marlborough, photographed by Steve Forman.
Steve Forman photographed tree swallows at Hager Pond in Marlborough.
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An orange sulphur at Breakneck Hill Conservation Land in Southborough, photographed by Steve Forman.
Steve Forman photographed an orange sulphur, a ruby-throated hummingbird, a barn swallow, a blue dasher, an eastern tailed-blue, European starlings, house finches, a house sparrow, a red-winged blackbird, a tree...
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An American robin at Heard Farm in Wayland, photographed by Craig Smith.
Craig Smith photographed an American robin, bobolinks, cedar waxwings, an eastern bluebird, a northern flicker, a song sparrow, a tree swallow, and a downy woodpecker at Heard Farm in Wayland.