Robert Dean is an avid birder and natural history illustrator.
Fiona A. Reid is a departmental Associate in Mammalogy at the Royal Ontario Museum. Twan Leenders is a professional herpetologist and illustrator with more than ten years of field experience in Central America. Jim Zook is one of Costa Rica's most prominent ornithologists. Robert Dean is the illustrator of the Helm Field Guide: Birds of Costa Rica.