noun
birdlike noctule; Nyctalus aviator
A species of bat found in East Asia. The name is usually written in katakana.
ヤマコウモリは日本にも生息している。
The birdlike noctule also inhabits Japan.
Compound of 山 (yama, 'mountain') and 蝙蝠 (kōmori, 'bat'). The exact derivation is uncertain; the name likely refers to its habitat.