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.

• 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