ニューヨーク・タイムズのインスタグラム(nytimes) - 4月29日 07時19分

Peacocks fan out their spectacular tail feathers to tempt pea hens. In the process, they also shake them — a behavior called train rattling. “These motions are a key part of courtship,” said Dr. Roslyn Dakin, a postdoctoral researcher at @ubcaplaceofmind. “They have a visual component and a sound.” To better understand the physics of this feather vibration, she and her colleagues videotaped peacocks courting and conducted additional lab research. Their most significant finding: #Peacock feathers vibrate just like a guitar string. With this knowledge of how train rattling works, scientists can study what effect it has on females, and what that says about the visual system of pea fowl. @samanthastark_nyt produced this @nytvideo. #regram

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