Emperor #penguins 🐧 use sea-ice for 8-9 months of the year to bring up their chicks. Crucially, the ice must remain into December/January to enable the chicks to fledge waterproof feathers. This didn't happen in the Bellingshausen last year. https://t.co/9QxHErz6da pic.twitter.com/FawLELgDak

— Jonathan Amos (@BBCAmos) August 24, 2023