4,    adults,    animals,    aves,    Babies,    Babys,    birds,    chicks,    eat,    eats,    fishes,    fledglings,    fodder,    format,    grebes,    hatchlings,    immatures,    juveniles,    lakes,    laterally,    move,    movement,    moves,    outdoors,    outside,    river,    swimming,    swims,    waterbirds,    waterfowls,