Radiolab's Heather Radke joins the show to talk about butts! Plus, Rachel talks about the history of chickens as pets, and Chelsey divulges why parrots are video calling each other. The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our Facebook group or tweet at us! Click here to learn more about all of our stories!  Links to Rachel's TikTok, Newsletter, Merch Store and More: https://linktr.ee/RachelFeltman  Link to Jess' Twitch: https://www.twitch.tv/jesscapricorn -- Follow our team on Twitter Rachel Feltman: www.twitter.com/RachelFeltman Produced by Jess Boddy: www.twitter.com/JessicaBoddy Popular Science: www.twitter.com/PopSci Theme music by Billy Cadden: https://open.spotify.com/artist/6LqT4DCuAXlBzX8XlNy4Wq?si=5VF2r2XiQoGepRsMTBsDAQ Don’t forget to subscribe to the podcast for free wherever you're listening or by using this link: bit.ly/WeirdestThingILearnedThisWeek Check out Weirdest Thing on YouTube: bit.ly/WeirdestThingILearnedThisWeekYouTube If you like the show, telling a friend about it would be amazing! You can text, email, Tweet, or send this link to a friend: bit.ly/WeirdestThingILearnedThisWeek Thanks to our sponsors!  Get 20% OFF @honeylove by going to https://www.honeylove.com/WEIRDEST! #honeylovepod If you’re looking for a simpler, effective investment for your health, try AG1, and get 5 free AG1 Travel Packs and a FREE 1 year supply of Vitamin D with your first purchase. Go to https://drinkAG1.com/WEIRDEST Learn more about your ad choices. Visit podcastchoices.com/adchoices