Early Warning System

Published: Dec. 6, 2019, 5 a.m.

b'Birds "mobbing calls" make it easy for all the animals in a locale to know when a predator is nearby. 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'