Birds can fly while half their brain is sleeping and some spiders sleep dangling on a silk thread, but what about worms. Do worms sleep? Featuring: Associate Professor John Lesku, La Trobe University.  Dr Shauni Omond, @shauniomond.sleepsci on Instagram, La Trobe University.   Professor Niels Rattenborg, Research leader on Avian Sleep, Max Planck Institute.  Dr Daniela Roessler, University of Konstanz.  Production: Ann Jones, Presenter / Producer. Petria Ladgrove, Producer. Additional mastering:  Roi Huberman. This episode of What the Duck?! was produced on the land of the Wadawarrung and Kaurna people and was originally broadcast in July 2023.