乌 ㄨ wū 灰 ㄏㄨㄟ huī 鹞 ㄧㄠ ˋ yào 烏 ㄨ wū 灰 ㄏㄨㄟ huī 鷂 ㄧㄠ ˋ yào (bird species of China) Montagu's harrier (Circus pygargus)