Adaptation

Iolo Williams explores the various strategies that animals use to survive harsh winters, including the incredible adaptations that mean ducks' feet don’t freeze and pond creatures can survive under ice. Iolo also visits a greater horseshoe bat roost before they move on to hibernate and searches for the caterpillars of marsh fritillary butterflies that overwinter in special frost-resistant webs.

Up next

S21 · E3

Intelligence

Tue, Feb 18, 2025