The term 'Bird Feature' can be broken down into three crossword solutions: BILL (4 letters), WING (4 letters), and CRAW (4 letters). A bird's BILL is the beak-like structure on its face, which is used for eating, drinking, and preening. Wings are the appendages that enable birds to fly, and they are also used for balance while walking. Finally, a bird's CRAW is an internal organ located in the throat, which is used for storing food before digestion.