Cigüeñuela Cuellinegra vs Avoceta Americana

The Black-necked Stilt and American Avocet can be distinguished by their bills and plumage. The Black-necked Stilt has a straight, thin bill and striking black-and-white plumage, while the American Avocet features a long, recurved bill and a distinctive cinnamon head and neck during the breeding season.

Bill shape: Look for the straight, thin bill of the Black-necked Stilt versus the long, recurved bill of the American Avocet. Breeding plumage: Note the cinnamon coloration on the head and neck of the American Avocet during the breeding season, absent in the Black-necked Stilt. Plumage pattern: The Black-necked Stilt's stark black-and-white contrast differs from the Avocet's chevron pattern.

Both species are large shorebirds, but the American Avocet is generally bulkier and larger than the Black-necked Stilt.

The Black-necked Stilt has a black back and white underparts with a black neck, while the American Avocet has a black-and-white chevron pattern on its back and wings, with a grayish-white head and neck that turns cinnamon in the breeding season.