Craig Smith photographed the following at Upper Mill Brook Conservation Area in Wayland: ants and aphids, American bullfrog, phantom crane fly, red-tailed hawk, turkeys
Read MoreJoan 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.
Read MoreAnne Dykiel photographed this American Bullfrog in Carlisle (click on image for a larger view).
Philip Keyes photographed this American Bullfrog at Robbins Mill Pond in Acton (click on image for a larger view).
Philip Keyes photographed these American bullfrogs at Robbins Pond in Acton (click on an image for a larger view).
Read MoreCraig Smith photographed this American bullfrog at the Assabet River National Wildlife Refuge in Stow (click on an image for a larger view).
Craig Smith photographed this American Bullfrog at Memorial Forest in Sudbury (click on image for a larger view).
David Blohm photographed this American Bullfrog off of Water Row in Sudbury (click on image for a larger view).
Anne Dykiel photographed this American Bullfrog in Concord (click on image for a larger view).
Anne Dykiel photographed this American Bullfrog in Acton (click on image for a larger view).