noun
least auklet
A small seabird (Aethia pusilla) found in the North Pacific. The name is usually written in katakana.
コウミスズメは北太平洋に生息する海鳥です。
The least auklet is a seabird that lives in the North Pacific.
Compound of 小 (ko, 'small') + 海雀 (umisuzume, 'auklet'). The exact derivation is uncertain, but the name describes a small auklet.