The Collaborative International Dictionary of English v.0.48:

Peabody bird \Pea"bod*y bird`\ (Zool.)
   An American sparrow (Zonotrichia albicollis) having a
   conspicuous white throat. The name is imitative of its note.
   Called also White-throated sparrow.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Zonotrichia albicollis
    n 1: common North American finch with a white patch on the
         throat and black-and-white striped crown [syn: white-
         throated sparrow, whitethroat, Zonotrichia albicollis]