two-crested cormorant (nannopterum auritum).

doublecrested phalacrocorax conservation environment ornithology aggressive california cormorants cormorant waterbird undefined wildlife freezing feathers outdoors predator blossom america fishing crested natural outdoor auritus plumage species branch nature winter flower spring autumn animal divers diving double floats hunter plant frost grass birds black diver fauna north sharp swims water wings tree bird twig leaf snow beak bill blue eyes fish lake long park sky reflection waterfowl wetland mallard ducks river marsh swamp goose duck pond