This is the largest North American shorebird. It is largely a grassland species breeding in the western plains and wintering primarily in Mexico. However it is not uncommon in the valleys and coasts of California in migration and in the winter.
These birds are highly skilled at manipulating small invertebrates which they find by probing in the mud or damp soil. They apparently use their long tongue to maneuver small morsels from the tip of the bill into their mouths. I have watched them swallowing small snails whole, and the way they guide prey along their long curved bill and into their mouths is remarkable.
Two subspecies are normally recognized. A smaller, shorter billed race, N. a. parvus in the north and west and a larger, longer billed nominate race in the southern plains. However, the validity of these races is doubtful, and the race wintering in California has never been determined.
Digiscoped with Panasonic DMC-LZ5 | Nikon FieldScope III | 30XWA |hand-held (no adapter)