Mario Cordoba has been guiding tours in Costa Rica since 1992. He is a university graduate with training in eco-tourism guiding. He worked for a year as resident naturalist/birding guide at Arenal Volcano National Park, then 3 years for a Costa Rican tour company. Since 1996 he has worked as a free-lance birding and naturalist guide for various Costa Rican tour companies including Costa Rica Expeditions. He has led tours for National Wildlife Federation, Cornell Adult University, International Expeditions, California State University, Holbrook Travel, Elderhostel, various North American birding tour companies, several Audubon groups, and other organizations and private parties. Mario is an excellent birder and is also very knowledgeable about botany, wildlife, politics, and history of Costa Rica. His former clients describe him as very patient even under the most trying circumstances. He comes highly recommended to us by the owners and staff at Savegre Mountain Hotel in San Gerardo de Dota. We welcome him as guide for our birding tours to Costa Rica.