"The basic knowledge of zoo biology covering nutrition, reproduction, research basics, management, genetics, design, and husbandry. A 2nd edition now exists, but it lacks many chapters from the 1st edition that I found informative."
"Covers all taxa of birds. It is very difficult to find a complete bird encyclopedia containing all species. I would suggest obtaining field guides from various regions of the world or invest in the very expensive 16 volume Handbook of Birds of the World published by Lynx Edicions."