Heavier chicks pay off only when times are tough: doi.org/10.1093/jeb/voag011 Louis @lbliard.bsky.social tested Lack's classic idea with 58 years of Wytham great tit data. Bigger broods meant lighter chicks, but heavy chicks did better only in cold, dry or crowded springs. 🐦 @jevbio.bsky.social

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Big toads win, old toads lose out: doi.org/10.1016/j.anbehav.2026.123674 Daniel's MSc paper is out. Our 41-year study of toads in an alpine pond shows that bigger males are more likely to win a mate, but ageing males lose out, a rare case of reproductive senescence in amphibians. 🐸 @asab.org

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🎤 The lineup is here! We’re delighted to introduce the keynote speakers for the Culture Conference 2027, taking place in Leipzig from 31 March to 2 April! And there are five of them this year! 🎉 Explore the lineup on our website: culture-conference.com/keynote-spea... 🧵 Read on to meet them all!

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Excited to share CASE PhD opportunities supervised by me at @edinburghbiology.bsky.social & @uoe-eid.bsky.social in collaboration with @iaciac.bsky.social , @samellisq.bsky.social and the wonderful team at Woodchester Park. Please share widely and get in touch to find out more! Links to ads below.

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🐱Meerkats! 🪏Burrows! 🛒Foraging! 🏜️Space use! Our #EditorsChoice for the #AnimalBehaviourJournal: “The bind of the burrow: trade-offs between refuge and foraging shape space use in Kalahari meerkats” Read at doi.org/10.1016/j.anbehav.2026.123696

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