zī / liào / zhōng / bǎ / zhè / zhǒng / niǎo / xiě / zuò / jiā / yā / lǜ / tóu / yā / dàn / rì / cháng / gèng / cháng / shuō / lǜ / tóu / yā资料中把这种鸟写作“家鸭绿头鸭”,但日常更常说绿头鸭。The source calls this bird “domestic duck mallard,” but people usually say “mallard” in everyday speech.