male of goosander (mergus merganser) with white body, black head with an iridescent green gloss, the rump and

animal bird europe mergus merganser wildlife aquatic beak black coast common contrast creature eurasian fauna gloss goosander gray grey habitat isidescent lake male nature ornithology outdoors outside plumage pond river seaduck spring swimming water waterfowl white wild wilderness wind body head iridescent green rump tail bright sunlight