Part 1 Origin and Diversity.- Part 2 Form and Function.- Part 3 Behavior.- Part 4 Reproduction.- Part 5 Ecology and Conservation
Frank Gill is an American ornithologist with worldwide research interests and experience. Expeditions to remote corners of the globe are one of his favourite diversions. Gill's projects include innovative program leadership and engagement of the public in ornithology through citizen science. He directed the encyclopedic work The Birds of North America (BNA). He pioneered the use of the internet for citizen science initiatives, including eBird with the Cornell Lab of Ornithology. Retired three times, he now leads the international effort to align the species taxonomy of the birds of the world (http://www.worldbirdnames.org).