female mallard or wild duck with blue feathers called a speculum on her wings. it walks on wooden gangway

female mallard blue feather speculum wings dabbling hen brownspeckled plumage bird waterfowl mottled quack karelia ruskeala anas animal avian background beak beautiful bill drake duck duckling ducks feathers flight fowl geese goose isolated mallards moorhen nature ornithology outdoors waterbird wild wildlife wing