Abelardo is a passionate birder. From a young age, he has spent much of his time out in the fields of Sarapiqui looking for new species to add to his list. At the age of 20, he began working at one of the biological stations of the Organisation for Tropical Studies in Costa Rica and developed his knowledge of the region's birds. Soon after, he became a guide, enabling him to share his expertise in spotting birds and obtained his certification at the Institute of Biodiversity. As an experienced ornithological leader, he continues to enjoy his fascination with birds, and to date, his personal lists accounts for more than 550 species seen in Costa Rica.