
Steve Stewart-Williams
@SteveStuWill • 269,167 subscribers
Psychology, evolution, science. Author of "A Billion Years of Sex Differences" (2026) and "The Ape That Understood the Universe" (2018).
Shorts
Videos
1:31
Sensitive content
This media may contain sensitive content.

This bizarre-looking creature is a long-wattled umbrellabird. The wattle hanging from its chest is a sexual ornament: the umbrellabird equivalent of the peacock's tail. Males display it to attract females. Ditto the Elvis quiff. Sexual selection really went to town on birds.
Steve Stewart-Williams19,028 次观看 • 1 年前
没有更多内容可加载