sentences:  Juveniles have the same overall pattern but are duller than adults, with the crown lighter, the breast light gray, and the throat and sides unstained white.Chicks are undescribed.The bird is named for its most common call, a "loud, flute-like whistled "kleeer-er"" or "a high, reedy, complaining whistle, often doubled or uttered in a ser[ies], "wueeee, wueeee.…," easily imitated"  or "a distinctive, characteristic, far-carrying, melodious whistle" that "can be rendered 'kee, kee, kee.'"