Here are some books I have read or have been recommended relating to birds of prey. If you have any recommendations please let me know and I'll post them on here!
Books
Reference
Raptors of the World - James Ferguson-Lee & David A Christie
Owls of the World - Konig Weick
Eagles, Hawks & Falcons of the World - Brown & Amadon
Population Ecology of Raptors - Ian Newton
Birds of Prey - Leslie Brown
Flight Identification of European Raptors - Parker, Willis, Christensen & Nielsen
Birds of Prey (Behaviour Guide) - Nicholas Hammond
Raptors - A Field Guide for Surveys and Monitoring - Various
Manual of Ornithology - Noble S Proctor & Patrick J Lynch
How Birds Work - Ron Freehy
Tracks & Signs of the Birds of Britain & Europe - Brown, Ferguson, Lawrence & Lees
Vultures Natures Ghastly Gourmet - Wayne Grady
Vultures & Condors - David Houston
Captive Birds of Prey
Falconry & Hawking - Phillip Glasier
Falconry Care, Captive Breeding & Conservation - Jemima Parry Jones
Books
Reference
Raptors of the World - James Ferguson-Lee & David A Christie
Owls of the World - Konig Weick
Eagles, Hawks & Falcons of the World - Brown & Amadon
Population Ecology of Raptors - Ian Newton
Birds of Prey - Leslie Brown
Flight Identification of European Raptors - Parker, Willis, Christensen & Nielsen
Birds of Prey (Behaviour Guide) - Nicholas Hammond
Raptors - A Field Guide for Surveys and Monitoring - Various
Manual of Ornithology - Noble S Proctor & Patrick J Lynch
How Birds Work - Ron Freehy
Tracks & Signs of the Birds of Britain & Europe - Brown, Ferguson, Lawrence & Lees
Vultures Natures Ghastly Gourmet - Wayne Grady
Vultures & Condors - David Houston
Captive Birds of Prey
Falconry & Hawking - Phillip Glasier
Falconry Care, Captive Breeding & Conservation - Jemima Parry Jones