A very good book is 'Frightful's Mountain', by the same author as 'My Side of the Mountain' (Jean Craighead George). It's unique in that it is written from the falcon's perspective -- the intuitive longings such as migration, mating, flying, taking care of the young, etc. One of the best goods I've read - which surprised me - LOL! Loved it. It's a kid's book so it's an easy read - I read it with my son.
ETA: It's written as a novel - a story, not an educational type of book. Frightful is the peregrine falcon - if you ever read My Side of the Mountain, it's one of the sequels.