4,    adults,    animals,    aves,    bicolor,    bicolour,    birds,    blue-and-yellow,    bough,    boughs,    branches,    budgerigars,    budgies,    format,    indoors,    laterally,    limbs,    lovebirds,    parakeets,    pets,    psittacines,    twigs,    two-colored,    two-coloured,