Sandwich Tern, Thalasseus sandvicensis

Sandwich Tern, Thalasseus sandvicensis. Birds photographed in the greater Progreso area, Yucatán, March 2021. Photographs and identification courtesy of Marina Sutormina, Stockholm, Sweden.

Sandwich Tern, Thalasseus sandvicensis, Non-Breeding Plumage. Birds photographed in the greater Progreso area, Yucatán, March 2021. Photographs and identification courtesy of Marina Sutormina, Stockholm, Sweden.

Laridae Family of Gulls, Terns and Skimmers.