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Observations on a population of Red-fronted Macaws Ara rubrogenys in the Río Caine valley, central Bolivia

Published online by Cambridge University Press:  11 May 2010

Marc Boussekey ,
Jean Saint-Pie  and
Olivier Morvan
Marc Boussekey
Affiliation:
Espace ZOOlogique de Saint-Martin-la-Plaine, 42800 Rive-de-Gier, France.
Jean Saint-Pie
Affiliation:
Pares Zoologiques d'Asson et de Pietat, 64800 Nay, France.
Olivier Morvan
Affiliation:
Pygargue Productions, Le Sableau, 85450 Chaille-les-Marais, France.
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Summary

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A population of about 60 Red-fronted Macaws Ara rubrogenys, a parrot endemic to central southern Bolivia, was studied in an area of around 200 ha in the Río Caine valley, northern Potosí department, in October and November 1990. The habitat was semi-desert steppe dominated by cacti; the very light rainy season (in which the macaws are believed to breed) lasts from November to April. The birds, most commonly to be seen in pairs, were active in the early morning and the later afternoon, feeding during both these periods on groundnuts in a 30 ha area cultivated by local Indians who, however, made no attempts to persecute them. There seem to be no serious threats to the species in the Rio Caine valley. However, breeding success appeared to be low, presumably reflecting the sparse dietary resources of the region.

Durante los meses de octubre y noviembre de 1990, se estudió una población de Guacamayo Dorado Ara rubrogenys (especie endémica del área centro y sur de Bolivia) compuesta por unos 60 individuos. El área de estudio abarco unas 200 ha en el valle del Río Caine, al norte del departamento de Potosí. El hábitat en esta zona estaba formado por estepas semidesérticas dominadas por Cactáceas, con un período de lluvias moderadas (tiempo en el que se cree que tiene lugar la reproduccíon) que se extiende desde noviembre hasta abril. Las aves se observaron preferentemente en parejas, siendo las primeras horas de la mañana y las últimas de la tarde los momentos de mayor actividad en los que se alimentaban de maní (cacahuetes) en un área de 30 ha cultivada por indígenas, quienes no mostraron intentión alguna por evitarlo. Aparentemente no hay evidencia que induzca a pensar que la especie se encuentre amenazada en el valle del Río Caine, no obstante, el éxito reproductor aparentemente resultó ser bajo, lo que reflejaría quizás unos recursos tróficos escasos en la región.

Type
Research Article
Information
Bird Conservation International , Volume 1 , Issue 4 , December 1991 , pp. 335 - 350
Copyright
Copyright © Birdlife International 1991

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