Wandering Tattler Identification, All About Birds, Cornell Lab of Ornithology

Breeding adult

Medium-sized shorebird with a long bill, and short thick yellow legs. Breeding birds are gray above and barred gray and white below. Bobs its tail up and down.

Nonbreeding adult/immature

Constantly bobs its tail up and down. Walks along rocky shorelines where its gray back and chest blend in with the rocks.

Breeding adult

Forages on rocky or sandy substrates, often within the intertidal zone, for small marine invertebrates, insects, and fish. Frequently bobs its tail up and down while walking.

Nonbreeding adult/immature

In flight, entirely gray above.

Nonbreeding adult/immature

Medium-sized shorebird with a long bill and thick legs. Typically walks with a horizontal posture while bobbing its tail. Nonbreeding birds are gray above with an unmarked gray chest. Note yellow legs.