婚こん衣い

noun

nuptial plumage; breeding plumage

Ornithological term for the special plumage birds develop during the breeding season.

• 繁はん殖しょく期きになると、多おおくの鳥とりは鮮あざやかな婚こん衣いに変かわる。

  During the breeding season, many birds change into bright nuptial plumage.