Forster’s Tern, Sterna forsteri

Forster’s Tern, Sterna forsteri. Photograph taken in the coastal area of Yavaros, Sonora, December 2018. Photograph and identification courtesy of David F Smith, Alamos, Sonora.

Forster’s Tern, Sterna forsteri. Photograph taken in the coastal area of Yavaros, Sonora, November 2018. Photograph and identification courtesy of David F Smith, Alamos, Sonora.

Family:  Gulls, Terns and Skimmers.