With the growth in the bird owning public, has come a commensurate growth in the number of veterinarians providing care for birds, and an enormous increase in the knowledge of the husbandry and diseases of these birds, including several comprehensive textbooks of avian medicine and surgery. Since birds are now common mainstream pets there is also a need for diagnostic veterinary pathologists to be familiar with the diseases of these species. The aim of this book is to bring together in one volume a comprehensive review of the gross and histologic features of the diseases of pet and aviary bird, provide a guide to ancillary diagnostics, and a context in which to interpret the pathologic findings.