The guides deliver solid science without being stilted or boring--sections have titles like "Avian Mating Systems and Birds That Cheat" and "Frugivory: Animals That Eat Fruit and the Trees That Want Them To". The one element that is in surprisingly short supply is ecologically sound travel tips, from general dos and don'ts to a list of ecologically responsible tour operators and other eco-friendly establishments in Belize. This is mildly discouraging, since learning howto travel responsibly is as important as knowing what you are going to see. But given the relative paucity of travel literature on Belize, Belize and Northern Guatemala: The Ecotravellers' Wildlife Guide proves a valuable resource for anyone curious about the natural wonders of this increasingly popular destination. --Andrew Nieland