birds are cold on the lake. ducks overwinter on the freezing river. problems of birds in ice-covered reservoir

animal animals are background beak beautiful bird birds bridge brown city closeup cold dive drake duck duckling ducks family famous freezing frozen group ice icecovered lake landscape mallard many natural nature new ornithology outdoor overwinter park pond pool problems reservoir river season snow swans swim swimming tranquil urban water waterfowl weather white wild wildlife winter wintering