Mahuida Co — Province of Buenos Aires

Official source account — 2020 annual report, printed page 147: A Mahuida Co landscape photograph contained an unfamiliar elongated form noticed only during review. CIAE identified a streamlined body with unequal ends resembling a beak and tail, together with a surface compatible with a raised wing. Their orientation suggested a bird crossing left to right. The agency classified this as a supported Type B explanation, while acknowledging the fleeting event could not be recreated. The summaries distinguish reported observations from the agency’s proposed explanations. Source Type A/B ratings describe explanatory confidence and are not encounter classes.