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Studies of Horned Curassow Pauxi unicornis in Bolivia

  • Guy Cox (a1), J. M. Read (a2), R. O. S. Clarke (a3) and V. S. Easty (a4)

Extract

Observations of the Horned Curassow Pauxi unicomis in Amboro National Park, depto. Santa Cruz, Bolivia, allowed us to assess the status of a species whose habits in the wild were virtually unknown. Vocalizations, including call notes and the deep booming song, are described. Density was estimated by counting booming birds in the breeding season using a three-hide triangulation method. The study showed birds to be aggregated in one part of the study area. A nest of was found and the incubating female was observed for nine days: the individual incubated alone, left the nest at night, and returned at first light.

Observaciones de la Pava Copete de Piedra (Pava Crista Azul) Pauxi unicomis en el Parque Nacional Amboró, depto. Santa Cruz, Bolivia, nos permitió evaluar el estado de una especie cuyo comportamiento en el ambiente silvestre es prácticamente desconocido. Se describen vocalizaciones, que incluyen notas de llamada “call notes” y el profundo canto de estampida “deep booming song.” Se estimó la densidad de las aves por conteo de los sonidos de estampida “booming birds” durante la estacion reproductiva, usando un método de triangulación con tres puestos de observatión. Este estudio mostró que las aves se agregaban en una parte del área del estudio. Se encontró un nido de Pauxi unicomis y al hembra fue observada durante nueve dias durante la incubación; la hembra incubaba sóla, dejaba el nido por la noche y regresaba a las primeras horas del amanecer.

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Copyright

References

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Bond, J. and Meyer de Schauensee, R. (1943) The birds of Bolivia, Part 2. Proc. Acad. Nat. Sci. 95: 180.
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Cox, G. and Clarke, R. O. S. (1988a) Erste Ergebnisse einer Studie Über den Bolivianischen Helmhokko Pauxi unicornis im Amboró-Nationalpark, Bolivien. Trochilus 9: 96101.
Cox, G. and Clarke, R. O. S. (19886) In search of the unicorn. World Pheasant Assoc. News 19: 2122.
Delacour, J. and Amadon, D. (1973) Curassows and related birds. New York: American Museum of Natural History.
IUCN/SCC (1995) Conservation assessment and management plan for Neotropical Guans, Curassows, and Chachalacas, eds. Strahl, S., Ellis, S., Byers, O. and Valley, C. Plasse. Apple, Minn.: IUCN/SCC Conservation Breeding Specialist Group.
Paynter, R. A. (1992) Ornithological gazetteer of Bolivia, 2nd edition. Cambridge, Mass: Harvard University.
Remsen, J. V. Jr and Traylor, M. A. Jr (1989) An annotated list of the birds of Bolivia. Vermillion, S.D.: Buteo Books.
Vaurie, C. (1967) Systematic notes on the bird family Cracidae, 10. The genera Mitu and Pauxi and the generic relationships of the Cracini. American Mus. Novitates 2307: 120.
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Wetmore, A. and Phelps, W. H. Sr (1943) Description of a third form of curassow of the genus Pauxi. J. Washington Acad. Sci. 33: 142146.

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Studies of Horned Curassow Pauxi unicornis in Bolivia

  • Guy Cox (a1), J. M. Read (a2), R. O. S. Clarke (a3) and V. S. Easty (a4)

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