Barry Walker and Manu Expeditions organised the many trips throughout Peru. The Department of Environmental and Geographical Sciences, Manchester Metropolitan University also sponsored much of my research. Thanks also to Constantino Aucca and all the staff of ECOAN, Fabrice Schmitt, Stuart Marsden, Alan Fielding, Eliana Manga, Navidad Abandanio, Freddy Padovani, Mary Montesinos, the Department of Immigration (Cusco Region), and the Peruvian Consulate, London. Fabrice Schmitt provided the photo of the Short-tailed Finch.
We are grateful to Claudia Silva for translating this account from English into Spanish.