The Passenger Pigeon (Ectopistes migratorius) is believed to have been the most abundant species of bird in the world. It formerly ranged, as a breeding bird, over all of the wooded areas east of the Rocky Mountains and from southern Canada to Kansas, Kentucky, and Pennsylvania. During the winter months the great hordes wandered as far south as the Gulf States in search of food.
Proceedings of the Iowa Academy of Science
©1933 Iowa Academy of Science, Inc.
Du Mont, Philip A.
"The Passenger Pigeon as a Former Iowa Bird,"
Proceedings of the Iowa Academy of Science, 40(1), 205-211.
Available at: https://scholarworks.uni.edu/pias/vol40/iss1/130