They soar and they glide, they flap and they flutter, they swoop and they plummet. Solo or en masse, in formation or pas de deux, birds in flight are in their element, their airborne behavior as varied and distinctive as their plumage. In this book, wildlife biologist Carrol Henderson, a twenty-year veteran of bird-watching around the globe, offers his insights into spotting and identifying birds in flight. With 150 of Henderson's exquisite close-up...