noun
blue jay
Refers specifically to the North American blue jay (Cyanocitta cristata). Not to be confused with the Eurasian jay (カケス).
庭にアオカケスが来て、ピーナッツをついばんだ。
A blue jay came to the yard and pecked at the peanuts.
アオカケスは北アメリカに生息する鮮やかな青い鳥だ。
The blue jay is a vividly blue bird that lives in North America.
カケス is the Eurasian jay (Garrulus glandarius), a different species native to Eurasia. アオカケス is specifically the North American blue jay.
Compound of 青 (ao, 'blue') + カケス (kakesu, 'jay'). The name directly describes the bird's blue plumage.