A grouse's ostentatious mating ritual
By Globaltimes.cn-VCG, Published: 2018-06-20 18:23:23
Photo: VCG
Editor's Note:
A male grouse is seen performing a pompous mating ritual by puffing out his vocal sacs, a pair of egg-shaped pouches on its chest, to attract a mate by making loud noises in Wyoming, US.

Photo: VCG