Brooke, M. and Birkhead, T. (eds.), "The Cambridge Encyclopedia of Ornithology", Cambridge University Press, 1991
Calder, W, "The Kiwi", Scientific American July 1978 Feduccia, A., "The Origin and Evolution of Birds", Yale University Press, 1996
Harrison, C.J.O., "Bird Families of the World", Elsevier-Phaidon, 1978
Marshall, L., "The Terror Birds of South America", Scientific American Feb. 1994
Witmer, L. and Rose, K., "Biomechanics of the jaw apparatus of the gigantic Eocene bird Diatryma: implications for diet and mode of life", Paleobiology vol. 17 no. 2

Illustration Sources

Title Page and Great Auk:
Royal Ontario Museum (

Hooper Virtual Paleontological Museum (

Cassowary, Emu, Ostrich:
Birds: Zoonet (
Maps: Victoria, Australia zoos (

Zoonet (

Mt.Bruce National Wildlife Centre, New Zealand (

Bird and Map of Mascarene Islands: Mauritius (
Skeleton: American Museum of Natural History (
Map of Indian Ocean: (

Elephant Bird:
Bird, Skeleton, Egg: Lemuria Expedition (
Map of Indian Ocean: (

Great Auk:
Bird: Royal Ontario Museum (
Bones: Can. Museum of Nature. Courtesy Dr. Stephen Cumbaa

American Museum of Natural History (

Bird: Universidad de Concepcion, Chile (
Hunting Bird: Memorial University, Newfoundland (
Skeleton: DeKalb College, Georgia (

Photo of Teeth: Can. Museum of Nature. Courtesy Dr. Stephen Cumbaa
All other illustrations: Oceans of Kansas (Sternberg Museum of Natural History) (

Terror Bird:
University of California, Berkeley (