Up nextThe team investigates some of nature's biggest mysteries: where have all the acorns gone? Just how small is Britain's smallest bird? And why on earth is a group of crows known as a murder?

Always find 7Shows7domains.fans
Up nextThe team investigates some of nature's biggest mysteries: where have all the acorns gone? Just how small is Britain's smallest bird? And why on earth is a group of crows known as a murder?

Chris Packham, Kyle Thomas and Megan McCubbin explore why geese fly in a V formation, why leaves change colour in autumn and why birds eat rocks.

Featuring
3 credited
Keep watching