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Ornithology Lecture Notes
This note covers the following topics: Introduction to Birds, Bird Flight, The Geography of Birds, Urinary System, Salt Glands, and Osmoregulation, Circulatory System, Respiratory System , Nervous System, Mating Systems and Avian Reproduction.
Author(s): Gary Ritchison
NA Pages 
Birds Of The World An Online Bird Book
This website is designed to serve as an online bird book. For ease of comparison, there are many species of birds on a web page. There are also links to similar birds that further help to compare species.
Author(s): carolinabirds.org
NA Pages
Ornithology Pre Reading Handout (PDF 45P)
This note covers the following topics related to Ornithology: What roles have birds played in human history, How diverse are birds, basic features of birds and how they have been influenced by flight.
Author(s): Gwen Brewer
45 Pages