Extinct bird species: Passenger Pigeon. The Passenger Pigeon was a very social bird that lived in large flocks. By the early 20th century, the passenger pigeon died out completely due to hunting and destruction of natural forest habitat
The last years have witnessed the extinction of various birds--and some species disappeared off the face of the earth as little as 100 years ago. Here's a list of the 10 most notable birds that have gone extinct in historical times.