Sudbury Valley TrusteesConservation, Collaboration, and Community since 1953

Joan Chasan photographed the following at Great Meadows National Wildlife refuge in Concord: American bullfrog, common moorhen, great blue heron, northern water snake, osprey, Virginia rail, Virginia rail chick, yellow-headed blackbird.

Joan Chasan photographed the following at Great Meadows National Wildlife Refuge in Concord: common moorhen, great blue heron, muskrat, northern water snake, and tree swallow.

Craig Smith photographed an eastern towhee, a great blue heron and northern flickers at the Assabet River National Wildlife Refuge in Maynard.

James Doyle photographed this great blue heron at Great Meadows National Wildlife Refuge in Concord.

Craig Smith photographed this great blue heron at the Assabet River National Wildlife Refuge in Maynard.

Anne Dykiel photographed this great blue heron along the Assabet River in Stow.