Hawks, Eagles and Falcons of North America: Biology and Natural History
Johnsgard, Paul A.
Harrier, Hawk of the Marshes: The Hawk That Is Ruled by a Mouse
Raptors of Western North America
Wheeler, Brian K.; Economidy, John M.
Raptors of Mexico and Central America [Scratch & Dent]
Clark, William S.; N. John Schmitt
Birds of Prey of the West: A Field Guide
Wheeler, Brian K., Text and Illustrations
Birds of Prey of the East: A Field Guide
Feathers in the Wind: The Mountain and the Migration. Hawk Mountain Sanctuary
Brett, James J.
Illustrations by Nagy, Alexander
The Hen Harrier
Australian Birds of Prey: The Biology and Ecology of Raptors
Birds of Prey of Southern Africa: Their Identification & Life Histories
Manual of Neotropical Birds
Blake, Emmet Reid
Australasian Eagles and Eagle-like Birds