A yellow and olive warbler (Oporornis philadelphia) of eastern North America, having a bluish gray hood set off by a black band on its breast.
英
美
- 哀林莺:一种分布于北美东部地区的黄色和橄榄色的林莺(哀林莺),长有淡蓝灰色的羽冠,胸口衬有黑条纹