Panajachel, north shore of Lake Atitlán, 5300 feet [c. 1615 m], Guatemala.
Has been considered a large and flight-impaired subspecies of P. podiceps; the two may have hybridized. Monotypic.
L Atitlán, in SW Guatemala.
Always confined to a single lake, where population never exceeded c. 400 individuals. Introduction of large predatory fish greatly reduced its population, this was exacerbated by egg-collecting, poaching and reed-harvesting during breeding season, and later by urbanization and further habitat destruction. Hybridization with P. podiceps may have played a part in the final extinction of P. gigas, which occurred at some time between 1983 and 1986#R#R.
Food and feeding
Status and conservation
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