great crested grebe, podiceps cristatus, podicipedidae

great crested grebe waterfowl birdlife birds zoology podiceps cristatus podicipedidae lake river swamp green summer livery bird wild colors medium size beak plumage floating swimming water marshes europe italy umbria terni piediluco autumn daylight shadow morning environment outdoor outside ornithology ornithologist wings flight animal nature natural wildlife nest eggs chicks breeding gregarious palmate legs swims little waterbird ducks duck wing mallard goose swan reflection seabird shorebird gull