I am a biologist, and operate birding tours throughout the world. www.alvarosadventures.com . My expertise is in New World birds, particularly North American and Southern Cone (South American) species. I am author of the Field Guides to the Birds of Chile, and the ABA Field Guide to birds of California. I have always been a naturalist, and I am keen to use iNaturalist to learn groups I am not familiar with.