Estado actual de una población urbana de Cotorra Myiopsitta monachus en Argentina
; Crego, Agustina ; Zalazar, Sofia
; Volpe, Noelia Laura
; Kacoliris, Federico Pablo
; Berkunsky, Igor 
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Fecha
01/2024
Editorial
Aves Argentinas - Asociacion Ornitologica del Plata
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1850-4884
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La Cotorra Myiopsitta monachus ha colonizado ciudades en muchos lugares del mundo. En este trabajo evaluamos el estado actual de la población de este psitácido en la ciudad de La Plata, Buenos Aires (Argentina), ubicada dentro del rango de distribución original de la especie. Nos propusimos describir las características de nidos y árboles donde fueron construidos y evaluar cambios a través del tiempo. Inspeccionamos arboledas en espacios verdes urbanos y registramos 671 nidos y 1344 cámaras en 288 árboles. La mayoría de los árboles donde anidaron correspondieron a Eucalyptus sp., mientras que el resto correspondió a Araucaria angustifolia, Pinus sp. y Platanus sp. La mayoría de los nidos tenían sólo una cámara, fueron construidos sobre ramas primarias y en el primer tercio de rama. Entre 2008 y 2016 se triplicó el número de nidos y árboles con nidos y se cuadriplicó el número de cámaras. El porcentaje relativo de nidos con una cámara disminuyó a lo largo del período estudiado. Nuestras observaciones respaldan la hipótesis de que las cotorras tienden a aumentar el número de cámaras en lugar de construir nuevos nidos.
The Monk Parakeet Myiopsitta monachus has colonized cities in several regions of the world. We aimed to assess the current status of the population of Myiopsitta monachus in La Plata city (Buenos Aires Province), Argentina, located within the original distribution range of the species. We aimed to describe the characteristics of the nests and the trees where they were built, and to assess changes over time. We surveyed all the tree groves in green spaces and recorded 671 nests and 1,344 chambers in 288 trees. Most of the trees where Myiopsitta monachus nested corresponded to Eucalyptus sp., while the rest corresponded to Araucaria angustifolia, Pinus sp., and Platanus sp. Most nests had only one chamber, and were built on primary branches and in the first third of the branch. Between 2008 and 2016, the number of nests and trees with nests was tripled, and the number of chambers was quadrupled. The relative percentage of nests with a single chamber decreased throughout the period studied. Our observations support the hypothesis that Monk Parakeets tend to increase the number of chambers per nest rather than build new nests.
The Monk Parakeet Myiopsitta monachus has colonized cities in several regions of the world. We aimed to assess the current status of the population of Myiopsitta monachus in La Plata city (Buenos Aires Province), Argentina, located within the original distribution range of the species. We aimed to describe the characteristics of the nests and the trees where they were built, and to assess changes over time. We surveyed all the tree groves in green spaces and recorded 671 nests and 1,344 chambers in 288 trees. Most of the trees where Myiopsitta monachus nested corresponded to Eucalyptus sp., while the rest corresponded to Araucaria angustifolia, Pinus sp., and Platanus sp. Most nests had only one chamber, and were built on primary branches and in the first third of the branch. Between 2008 and 2016, the number of nests and trees with nests was tripled, and the number of chambers was quadrupled. The relative percentage of nests with a single chamber decreased throughout the period studied. Our observations support the hypothesis that Monk Parakeets tend to increase the number of chambers per nest rather than build new nests.
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