duck with white specula
Refers to any duck species that has white patches (specula) on the wings. A specialized bird-watching term.
Hajiro is a general term for ducks with white patches on their wings.
black guillemot; tystie
tufted duck
ringed plover; Charadrius hiaticula
Standard kanji spelling for this bird name.
Compound of 羽 (ha, 'wing') and 白 (shiro, 'white'), referring to the white wing patches. The reading はじろ is a rendaku form of しろ.