Why are tropical birds like parrots and quetzals so much more colorful than those in more temperate climates? How can a vulture soaring thousands of feet above the canopy spot a dead rodent no bigger than a mouse on the rainforest floor? What permits sparrow-sized antbirds to not only survive but to thrive among relentless hordes of army ants that devour every other living thing in their path? Steven Hilty has led birding tours to the American Tropics for decades. By providing answers to the hundreds of questions asked by participants of these expeditions, Hilty has produced a natural history of the bird life of the New World Tropics that is at once practical, accurate, and as endlessly fascinating as the species whose lives it reveals. was published by Chapters Publishing in 1994 and went out of print in 1997. UT Press is pleased to reissue it with a new epilogue and updated references.