Underwing
01
날개 아래 깃털, 언더윙 깃털
the feathers on the underside of a bird's wing, which can have distinctive patterns and colors that are often visible in flight
02
밤나방, 아래날개
moth having dull forewings and brightly colored hind wings
날개 아래 깃털, 언더윙 깃털
밤나방, 아래날개
