Meaning of seaside sparrow

sea'side spar"row

Pronunciation: [key]
  1. a species of sparrow, Ammospiza maritima, existing in two subspecies, onehaving dark olive-drab plumage with a lighter breast and underbelly, and the otherhaving bold black and white markings on the breast and underbelly: the dusky seaside sparrow is almost extinct.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.