Good news!!! Now (year 2021) the answer to such questions is VERY easy, as the long awaited Mark Pearman's (with the addition of Nacho Areta as coauthor) field guide to the birds of Argentina and the South-west Atlantic has seen the light and it's as amazing as we were expecting it to be. It includes comprehensive information about 1075 species of birds (they missed at least one, which was first recorded in the country after the book was sent to print: the Andean Ibis - Theristicus branickii - showed up in North-west Argentina) and outstanding illustrations from four different artists, including two of the best Argentines: Aldo Chiappe and Jorge RodrÃguez Mata. Printed by Helm and Princeton field guides, you can order yours in the following links (just in case, I don't get any commission from this...): - Helm Field Guides: https://www.nhbs.com/birds-of-argentina-and-the-south-west-atlantic-book - Princeton Field Guides: https://press.princeton.edu/books/paperback/97
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