Raúl Alvero — Purmamarca; Province of Jujuy

Official source account — 2020 annual report, printed page 153: Raúl Alvero found a distant unfamiliar shape while reviewing a photograph from Purmamarca. CIAE noted limited image detail but identified a streamlined body, a pointed front and a rounded raised wing-like surface. It proposed a bird crossing the view at considerable distance, accounting for the weak contrast. The agency classified the supported interpretation Type B and did not claim a species identification. The summaries distinguish reported observations from the agency’s proposed explanations. Source Type A/B ratings describe explanatory confidence and are not encounter classes. The map uses an approximate GeoNames locality centroid, not the observation point.