Little tern (Nhàn nhỏ, Sternula albifrons)
The little tern (Sternula albifrons) is a seabird of the family Laridae. 

This bird breeds on the coasts and inland waterways of temperate and tropical Europe, Asia, north and west Africa, and eastern Australia. 
This bird species is strongly migratory, wintering in the subtropical and tropical oceans as far south as South Africa and Australia.

The term Charadriiformes comes from New Latin, combining the Greek word kharadrios ("a bird of river valleys" or "a bird of ravines") and the Latin suffix -formes meaning "forms" or "shaped like". Therefore, Charadriiformes translates to "birds shaped like or resembling the charadrius," which is a type of plover or stone curlew historically found in dry river beds or ravines. 

Laridae is a taxonomic family of seabirds (gulls, terns, noddies, and skimmers) derived from the New Latin Larus (gull) and the Greek λάρος (laros), referring to a voracious seabird. It stems from the Latin -idae, signifying a family group in biological classification. 

The genus name Sternula is a diminutive of Sterna, "tern".

The specific albifrons is from Latin albus, 'white', and frons, 'forehead'.