Episode 3: Thorns and Stingers

From the outside, Arizona - with its venomous snakes, scorpions and lizards; barbed cactus and spiked trees; and imposing geography - looks primed to kill anyone foolish enough to come close. But that impression doesn’t do justice to the complex evolutionary forces that have shaped the state’s flora and fauna.

Oh, by the way, take a look. You’ll see I wasn’t lying about the elegant trogon.