Tiny radio transmitters reveal a hidden survival tactic in birds https://theconversation.com/tiny-radio-transmitters-reveal-a-hidden-survival-tactic-in-birds-274517 Paper by Alice Barratt et al.: https://www.cell.com/current-biology/abstract/S0960-9822(26)00011-4

"During and after the extreme rain events, the #birds remained in their burrows and they entered deep and long bouts of #torpor—far exceeding what passerine birds were thought capable of. Such torpor is crucial for these in-flight foragers to survive when wet and cold conditions suppress the activity of flying #insects"