The term BIG BIRD ABODE is composed of four crossword solutions: NEST (4 letters), AVIARY (6 letters), EGRET (5 letters), and EMU (3 letters). A NEST is a structure built by birds to house their eggs and young. An AVIARY is an enclosure, usually outdoors, where birds are kept in captivity. Egrets are a type of heron, a long-legged wading bird. Emus are large, flightless birds native to Australia. Together, these four words describe a place where large birds can live and breed.