aquatic bill bird brown duck feather feathers float floating fowl lake plumage pond river swim swimming water wildfowl animal avian beak birds crane cranes ducks stork storks wade wading wing wings beds crop farm Great Britain grow Nasturtium officinale plant rural salad uk united kingdom watercress wiltshire black endangered feet flightless flipper foot humboldt penguin penguin species Spheniscus humboldti walk white background bloom green leaf leafes lilies lily nature nuphar nymphaea pants wallpaper waterlily animals art cartoon clip art clipart graphic illustration life reptile snake wild wildlife brackish coastal ecosystem estuary forest India mangal mangrove mangrove forest mangrove swamp marine Rhizophora Rhizophoraceae saline shrubs trees