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Near-Threatened This giant coot is known to nest in low density in a few open high-altitude lakes with rich submergent vegetation in the C Andes of SW Bolivia, N Chile, and NW Argentina. The nests are rather conspicuous because they are made on top of piles of stones in shallow water and are well-visible from the shore, resulting in egg predation. The habitat is degrading because of the trampling of the shores and destruction of near-shore submergent vegetation by cattle, while pollution and increasing turbidity results in dying off of vegetation. The population has always fluctuated in association with variations in water level, but increased water extraction for irrigation and drinking water results in drying out of some lakes. The total population remaining is roughly estimately at c. 10,000 birds.
Items in the ZMA - 3 birds:
ZMA 19257, 19264 & 19266 Two males & one female, imported late Oct 1966 in the Amsterdam Zoo and all three dead within hours after arrival on 1 Nov 1966, skins.
These birds were imported from South America as F. gigantea (which breeds also at high altitude in the same area), and the birds were labelled as such in the Zoo. They were found to be F. cornuta several years later when arriving on the desk of the museum's collection manager together with three true F. gigantea which were imported in late Oct 1967 (probably from the same trader); two of these latter three also died almost immediately, another survived captivity for 8 months.
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