Sterna trudeaui

• Trudeau’s tern / snowy-crowned tern
• Gaviotín lagunero / gaviotín de antifaz negro

Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Charadriiformes
Family:Laridae
Genus:Sterna
Species:S. trudeaui

Playa Grande, Maldonado, Uruguay

via Flickr https://flic.kr/p/256sguK