Thomas S. Schulenberg is a research associate at the Cornell Laboratory of Ornithology. He was a founding editor of Neotropical Birds. John O'Neil is a renowned ornithologist and former director of the Museum of Natural Science at Louisiana State University. O'Neill initiated, co-authored, and co-illustrated this book, which represents the culmination of his more than 40 years of fieldwork and research.Dan Lane is a research associate at Louisiana State University. An expert on the birds of the Neotropics, he joined John O’Neill on several of his Peruvian expeditions. He remains a tour-leader and bird illustrator of note. Douglas F. Stotz is an ornithologist based at the Field Museum of Natural History in Chicago. Theodore Parker III (1953–1993) was an American ornithologist who specialised in the Neotropics. A brilliant field birder, he tragically died in a plane crash in Ecuador in 1993.

The book describes, maps and illustrates them all, and is a model of high-quality illustration, concise information and clear graphics. A must for both ornitho-experts and armchair dreamers.