Steve Forman photographed these black swallowtail butterflies at Great Meadows National Wildlife Refuge in Concord.
Black Swallowtails in Concord
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Nancy Wright photographed a black-capped chickadee, a green heron, and a wood duck in Grafton.
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Ron McAdow photographed a palm warbler, rusty blackbirds, a swamp sparrow, and a white-throated sparrow at Assabet River National Wildlife Refuge.
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Ron McAdow photographed this pied-billed grebe with a fish on Farrar Pond in Lincoln.