anser anser domesticus and cygnus atratus are competing with koi for food in the swimming pool.

algae-rich anser asia atratus base beak beautiful bell biology black bright carp clever competing cygnus domestic domesticated domestication domesticus doves ducks east eaves egg eggs europe fat feathers fighting flowers flying food geese goose goosefoot grains grass gray habitat hatch hybrid knob koi lake light lion-headed males mandarin meat paddling pecking pigeons pond pool poultry quail racing respiration rice rowing savory screaming sharp-eyed sky soft-shell spreading subspecies swan swans swimming tender trees turtles water west wings