Alderton, David Complete illustrated encyclopedia of birds of the world: The ultimate refernce source and identifier for 1600 birds, profiling habitat, nesting, behaviour and food - London Anness Publishing Ltd. 2004 - 512p. ISBN: RS 2520.26 (USD 48.56) Source: RS 2520.26 (USD 48.56) Dewey Class. No.: 598.03 ALD