Tree Swallow

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Mating tree swallows in Grafton, photographed by Nancy Wright.
Nancy Wright photographed this mating pair of tree swallows in Grafton.
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An American goldfinch at Breakneck Hill Conservation Land in Southborough, photographed by Steve Forman.
Steve Forman photographed an American goldfinch, a bee, a cabbage white butterfly, tree swallows, a red-tailed hawk, and a ruby-throated hummingbird at Breakneck Hill Conservation Land in Southborough.
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A great blue heron with a fish at Great Meadows National Wildlife Refuge in Concord, photographed by Steve Forman.
Steve Forman photographed a great blue heron with a fish, a marsh wren, a red-winged blackbird, a tree swallow catching a feather, and a warbling vireo in its nest at...
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A gray catbird at SVT's Smith Conservation Land in Littleton, photographed by Jon Turner.
Jon Turner photographed a gray catbird, a hermit thrush, a red-winged blackbird, and tree swallows at SVT's Smith Conservation Land in Littleton.
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An American goldfinch at Breakneck Hill Conservation Land in Southborough, photographed by Steve Forman.
Steve Forman photographed an American goldfinch, a northern cardinal, a red-tailed hawk, a pair of red-winged blackbirds, and a tree swallow at Breakneck Hill Conservation Land in Southborough.
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An American goldfinch at Breakneck Hill Conservation Land in Southborough, photographed by Steve Forman.
An American goldfinch and a tree swallow at Breakneck Hill Conservation Land in Southborough, photographed by Steve Forman.
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A tree swallow at Hager Pond in Marlborough, photographed by Steve Forman.
Steve Forman photographed a tree swallow, a mallard, a mute swan, and a painted turtle at Hager Pond in Marlborough.
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A common grackle at Great Meadows National Wildlife Refuge in Concord, photographed by Steve Forman.
Steve Forman photographed a common grackle, a red-winged blackbird, a tree swallow, and a pair of wood ducks at Great Meadows National Wildlife Refuge in Concord.
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A pair of hooded mergansers at MacCallum Wildlife Management Area in Northborough, photographed by Steve Forman.
Steve Forman photographed hooded mergansers, tree swallows, buffleheads, and ring-necked ducks at MacCallum Wildlife Management Area in Northborough.
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A tree swallow at MacCallum Wildlife Management Area in Northborough, photographed by Steve Forman.
Steve Forman photographed this tree swallow at MacCallum Wildlife Management Area in Northborough.