白腰燕鸥

分类位置

同属物种

褐翅燕鸥

Bridled Tern

乌燕鸥

Sooty Tern

灰背燕鷗

Spectacled Tern

形态与习性

The Aleutian tern (Onychoprion aleuticus) is a migratory bird living in the subarctic region of the globe most of the year. It is frequently associated with the Arctic tern, which it closely resembles. While both species have a black cap, the Aleutian tern may be distinguished by its white forehead (although juvenile Arctic terns also have white foreheads). During breeding season, the Arctic terns have bright red bills, feet, and legs while those of the Aleutian terns are black. Onychoprion aleu

观鸟指南

最佳时段：清晨 6-9 点