Title: The Language of Butterflies: How Thieves, Hoarders, Scientists, and Other Obsessives Unlocked the Secrets of the World's Favorite Insect, Author: Wendy Williams
Title: Stokes Field Guide to Bird Songs: Eastern Region, Author: Lang Elliot
Title: Conversations with Birds, Author: Priyanka Kumar
Title: Bird Songs Eastern/Central, Author: Cornell Laboratory of Ornithology