2,    adults,    animals,    aves,    birds,    boles,    caves,    chicks,    eat,    eats,    feeds,    fledglings,    fodder,    format,    hatchlings,    holes,    immatures,    juveniles,    laterally,    outdoors,    outside,    size,    summerly,    summertime,    summery,    trees,    trunks,    vertical,    woodpeckers,