George Sanker / Greater yellowlegs (Tringa melanoleuca) standing on rock. Acadia National Park, Maine, USA. September.

George Sanker / Arctic tern (Sterna paradisaea), two fighting in mid-air. Machias Seal Island, New Brunswick / Maine, Canada / USA. July.

George Sanker / North American river otter (Lontra canadensis) swimming with head above water. Acadia National Park, Maine, USA. November.

Paul Williams / Moose (Alces alces) female with twin calves, Baxter State Park, Maine, USA, June.

Scott Leslie / Black-and-white Warbler (Mniotilta varia) male calling in spring, Maine

George Sanker / Osprey (Pandion haliaetus) with two Alewife (Alosa pseudoharengus) just caught in the Atlantic Ocean. Acadia National Park, Maine, USA. June.

Jeff Foott / Maple (Acer sp) leaves and needles in autumn, Acadia National Park, Maine

Jeff Foott / Deciduous forest and pond in autumn, Jordan Pond, Mount Desert Island, Acadia National Park, Maine

Jeff Foott / Deciduous forest in autumn, Acadia National Park, Maine

Jeff Foott / Deciduous forest in autumn, Acadia National Park, Maine

Jeff Foott / Creek in autumn, Duck Brook, Acadia National Park, Maine

George Sanker / Mallard (Anas platyrhynchos) pair greeting on snow-covered pond. Acadia National Park, Maine, USA.