More than 100 red-billed Leiothrix inexplicably swooped down on a glass wall of a building in Huitong County, Hunan, and 20 of the rare birds died, local media reported.

• 据当地媒体报道，湖南会同县日前出现红嘴相思鸟集体撞玻璃墙自杀现象。