The Falcon Thief : A True Tale of Adventure, Treachery, and the Hunt for the Perfect Bird by Joshua Hammer
A rollicking true-crime adventure about a rogue who trades in rare birds and their eggs—and the wildlife detective determined to stop him.
This book contains everything I personally love in a good nonfiction story: people who are obsessively passionate about one thing, a little history, some criminology, and the bizarre ways that human and other animals' lives intersect. I did a fair amount of both spontaneously exclaiming "Seriously!?!" and also looking up associated tidbits on the internet (gyrfalcons truly are beautiful birds!), which is how I know a nonfiction book has got me hooked.