Chūntiān yí dào, liǔshù shàng jiù néng tīngdào huánglí qīngcuì de jiàoshēng.
As soon as spring comes, you can hear the clear song of orioles in the willows.
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The line 两个黄鹂鸣翠柳 ("two orioles sing in the green willows") from 杜甫's 《绝句》 made the oriole a stock bird of spring in Chinese poetry. 黄莺 names the same bird, and poems use the two freely.