“The National Geographic Guide to Birding in North America” S:1 E:10 Birding by Ear

S:1 E:10 Birding by Ear Study the physics and biology of avian sounds, which underlie the rich range of birdsong heard in the field. Discover how birds learn to vocalize, and how bird songs and calls are used for a remarkable spectrum of communication. Look at mimicry in birds, ways to use recordings to attract birds, and how digital technology can teach us more about bird vocalization.