Birdology: Adventures with a Pack of Hens, a Peck of Pigeons, Cantankerous Crows, Fierce Falcons, Hip Hop Parrots, Baby Hummingbirds, and One Murderously Big Living Dinosaur

by Sy Montgomery

Yet sometimes, smart birds, capable of reasoning and forethought, are governed by an ancient, genetically determined program beyond their conscious control. Bird behavior is the product of both.