Did you know a crow can remember your face? If it decides you're trouble, it can recognize you years later, and it might tell its friends. Even ones that never met you.Tonight's question comes from Anthony in Okemos, Michigan, who'd heard that crows hold grudges passed down through generations. We find out what a group of scientists in Seattle discovered when they tested it with rubber masks, and why "grudge" turns out not to be quite the right word. Have a question of your own? We'd love for you to send it to us. Sleep Tight!, Sheryl & Clark ❤️👂📖 --- ✨ Want more science and fewer interruptions? Join Sleep Tight Premium for ad-free listening, bonus bedtime stories every week, and personalized shout-outs for your little ones! Start your free trial now on Apple Podcasts or at sleeptightpremium.com. --- Support Us 👉 Join Premium for AD FREE listening and extra bedtime stories! 👉 Sleep Tight Premium is now available in Apple Podcasts! 🎉 ⭐⭐⭐⭐ Leave a review wherever you listen to podcasts, or share our podcast with your friends. 📢 Have an interesting science topic you would like to investigate? Send us an email at hello@sleeptightscience.com , and we may feature it in an upcoming show. --- About Sleep Tight Science We’ve got bedtime down to a (Sleep Tight) Science! Sleep Tight Science is an award winning bedtime podcast that makes science accessible and enjoyable for the whole family. Snuggle in and drift off to sleep while learning about science topics submitted by listeners! Designed for curious young minds (but simple enough for grown-ups to understand), Sleep Tight Science uses big words to answer big questions that kids wonder about, like why do we feel icky sometimes and how do our legs help us move? Learn something new about the natural world while drifting off to dreamland. Have an interesting science question or a topic you’re curious about? Email us at hello@sleeptightscience.com, and it might just be the focus of an upcoming episode! Dedicated to enhancing the health and happiness of children, Sleep Tight Media helps families replace bedtime struggles with bedtime snuggles. Notes:Lasting Recognition of Threatening People by Wild American CrowsMarzluff, Walls, Cornell, Withey & Craig, Animal Behaviour (2010)The original mask study. Crows continued scolding a mask associatedwith trapping for at least 2.7 years.https://www.sciencedirect.com/science/article/abs/pii/S0003347209004339Social Learning Spreads Knowledge About Dangerous Humans AmongAmerican CrowsCornell, Marzluff & Pecoraro, Proceedings of the Royal Society B (2012)The follow-up study. Traces how scolding spread to crows that werenever trapped, and to young crows that learned from their parents.Scolding doubled in frequency and spread at least 1.2 km from theoriginal site over five years.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3234554/Cooperative Breeding in American CrowsMcGowan, Cornell Lab of Ornithology, long-term study, TompkinsCounty, NY (1988–1997)560 nests observed. 80% had helpers. Young crows stayed with theirparents one to six years and helped raise the next brood.https://www.birds.cornell.edu/crows/hatchrep.htmlAmerican Crow, Overview and IdentificationAll About Birds, Cornell Lab of OrnithologySize, appearance, range, and communal winter roosting.https://www.allaboutbirds.org/guide/American_Crow/overview
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