Michael O’Neal Campbell 
Vultures [PDF ebook] 
Their Evolution, Ecology and Conservation

This book reexamines current knowledge on the evolution, ecology, and conservation biology of both New World vultures (Cathartidae) and Old World vultures (Accipitridae) and seeks answers to past and present regional extinctions, colorizations, and conservation questions. Extinct species of both families are examined, as is the disputed evidence fo