Title: Handbook of the Birds of the World, Author: Josep Del Hoyo
Title: Avian Molecular Evolution and Systematics, Author: David P. Mindell
Title: Handbook of the Birds of the W, Author: Josep del Hoyo
Title: Directory of Australian Birds: Passerines: Passerines, Author: R Schodde
Title: Biology of the Ubiquitous House Sparrow: From Genes to Populations, Author: Ted R. Anderson
Title: Nage Birds: Classification and symbolism among an eastern Indonesian people / Edition 1, Author: Gregory Forth
Title: Handbook of the Birds of the World : New World Vultures to Guineafowl, Author: Josep Del Hoyo