Northern Water Snake

Irene Gruenfeld photographed this northern water snake along Hop Brook in Sudbury.

Jon Turner photographed a northern water snake at SVT's Gray Reservation in Sudbury.

Shelley Trucksis photographed Baltimore orioles and a northern water snake in Wayland.

Steve Forman photographed a gray catbird, monarch butterflies, a northern flicker, a northern water snake, and a red-bellied woodpecker in Southborough.

Steve Forman photographed honey bees, American lady butterflies, a great black wasp, a house sparrow, a pearl crescent butterfly, a sweat bee, an eastern kingbird, a Japanese beetle, a northern...

William Watt photographed this northern water snake at the Assabet River National Wildlife Refuge in Maynard.

Laura Lane photographed a northern water snake at SVT's Cedar Hill in Northborough.

Steve Forman photographed a northern water snake at Grist Mill Pond in Sudbury.

Karin Paquin photographed these northern water snakes at the Desert Conservation Land in Marlborough.

Steve Forman photographed this northern water snake at Grist Mill Pond in Sudbury.