Daniel E. Martínez Pina has devoted his life to both ornithology and illustration. A birder since his early childhood, he has travelled all over the country and is the co-author and illustrator of many books on the birds of this spectacular region. Gonzalo E. González Cifuentes is an author and tour leader based in Santiago, Chile. He is the author of Aves de Chile, published in English by Helm as Birds of Chile. A birder from the age of 13, he has been guiding since 1999 and is a partner in Birding Chile, a Chilean company specialising in Birding and Nature Tours. Gonzalo is currently one of the Associate Editors of the Revista Chilena de Ornitologia (Chilean Journal of Ornithology).

The illustrations by Gonzalo González are excellent, including plumage variations and more flight images than I have seen in most recent field guides. The format to each page is identical, with birds facing right and perched or flying in the same typical style. This may not please some, but for me it is the best solution for an effective field guide.