Silent Flyers. 06Apr18

Published: April 6, 2018, 3:59 a.m.

Designed for stealth flying, an owl's wing is still a bit of a mystery.\xa0 Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.\nLearn more about your ad choices. Visit megaphone.fm/adchoices