Heraldo is a young and enthusiast birder of Temuco, who has a strong knowledge of the birds of the Araucania region. He is a Biologist in Natural Resources Management and candidate to Doctor in Systematics and Biodiversity.
He has worked on the study of reproductive and vocal behavior of forest raptors (Rufous-tailed Hawk and owls), and in population studies of endangered or poorly known birds as Red-legged cormorant (Phalacrocorax gaimardi), Hellmayr's Pipit (Anthus hellmayri) and Markham's storm-petrel (Oceanodroma markhami).
Actually is working in systematics, taxonomy, biogeography and bioacoustics of Neotropical paserine birds, with special focus on Pipits (Anthus spp.). Is regional coordinator (Araucanía and Los Ríos) of Chilean Breeding Bird Atlas, co-editor of the birding magazine "La Chiricoca", regional editor for eBird Chile and national coordinator of Neotropical Waterbird Census organized by the ROC and Wetlands International.