noun
tree swallow (Tachycineta bicolor)
A North American bird species; the name is used in ornithological contexts.
ミドリツバメは北アメリカでよく見られるツバメの一種です。
The tree swallow is a type of swallow commonly seen in North America.
ツバメ is the general term for swallows; ミドリツバメ specifically refers to the tree swallow species.
Compound of 緑 (midori, 'green') and 燕 (tsubame, 'swallow'), referring to the bird's greenish upperparts.