Bob and Charles tackle one of the hardest subjects that Nature Guys has ever undertaken. In part 1 of Passenger Pigeon they go back in time to experience what this bird was like and how humans managed to wipe out this bird. Part 2 covers what we have learned and not learned from the Passenger Pigeon.

Related episodes: Passenger Pigeon Part 1, The Nature of Oaks with Doug Tallamy

For more information, we recommend these books:

• Wild New World The Epic Story of Animals and People in America by Dan Flores (Bob's pick)
• Man and Nature by George Perkins Marsh (Charles's pick)

Here are books Charles read; the links are to a non-profit website (www.bookshop.org). If you buy these books through the links below it gives Charles's blog credit which does him a lot of good!

• Silent Wings: A Memorial to the Passenger Pigeon (Edited by Wlater Edwin Scott)
• The Passenger Pigeon by Errol Fuller
• The Passenger Pigeon: Its Natural History and Extinction by W.A. Schorger
• A Feathered River Across the Sky: The Passenger Pigeon's Flight to Extinction By Joel Greenberg

Here are links to the relevant posts on Charles's blog called Gulo in Nature:

• Why is it bad when species go extinct?
• What is a keystone species?