Nest tree selection in a crowded introduced population of Monk Parakeet (Myiopsitta monachus) in Rome (central Italy): evidence for selectivity

2017 ◽  
Vol 27 (3-4) ◽  
pp. 196-201 ◽  
Author(s):  
Marianna Di Santo ◽  
Marco A. Bologna ◽  
Corrado Battisti
2021 ◽  
pp. 33-36
Author(s):  
Corrado Battisti ◽  
Giuliano Fanelli

We report first data on the fine-grained structure (branch diameter, length and diversity) in three different sectors [core (central side), buffer (peripheral side), and nest chamber)] of a nest of Monk Parakeets (Myiopsitta monachus) from a non-native breeding site located in an urban park (Rome, central Italy). The central core sector was characterized by longer and thicker branches capable of supporting the nest. The peripheral part (buffer) was characterized by less long and less thick branches with the function of completing the structure. Branches building the nest chamber were shorter and less thick but very diversified in size, because they included both small branches supplied inside the chamber and longer branches covering it. This diversification of the internal chamber (nest chamber) could be functional to maintain stable temperatures of incubator chambers compared to large fluctuations outside the nest. The presence of leaves of herbaceous species (Hordeum leporinum) could play a bactericidal role for the nest plant material.


1998 ◽  
Author(s):  
Mark F. Spreyer ◽  
Enrique H. Bucher

2021 ◽  
Author(s):  
Francesca S. E. Dawson Pell ◽  
Juan Carlos Senar ◽  
Daniel W. Franks ◽  
Ben J. Hatchwell

The Condor ◽  
2007 ◽  
Vol 109 (2) ◽  
pp. 389-398 ◽  
Author(s):  
Susannah C. Buhrman-Deever ◽  
Amy R. Rappaport ◽  
Jack W. Bradbury

Abstract Introduced feral populations offer a unique opportunity to study the effects of social interaction and founder effects on the development of geographic variation in learned vocalizations. Introduced populations of Monk Parakeets (Myiopsitta monachus) have been growing in number since the 1970s, with a mixture of isolated and potentially interacting populations. We surveyed diversity in contact calls of Monk Parakeet populations in Connecticut, Texas, Florida, and Louisiana. Contact call structure differed significantly among the isolated populations in each state. Contact call structure also differed significantly among potentially interacting nest colonies in coastal Connecticut, and these differences did not follow a geographic gradient. Limited dispersal distances, founder effects, and social learning preferences may play a role in call structure differences.


Zoology ◽  
2021 ◽  
Vol 144 ◽  
pp. 125877
Author(s):  
Julieta Carril ◽  
Claudio G. Barbeito ◽  
Claudia P. Tambussi

2021 ◽  
pp. 185-194
Author(s):  
J. L. Postigo ◽  
J. Carrillo-Ortiz ◽  
J. Domènech ◽  
X. Tomàs ◽  
L. Arroyo ◽  
...  

Behavioural flexibility may play a relevant role during invasion of a new habitat. A typical example of behavioural flexibility favouring invasion success refers to changes in foraging behaviour. Here we provide data on changes in the foraging strategies of monk parakeets Myiopsitta monachus over a period of 17 years (2001–2017) in Barcelona city. During this time, consumption of food on the ground increased by more than 25 % and the consumption of anthropogenic food increased by 8 %. Detailed information about the food consumed is provided. Feeding on the ground and consumption of low plants allow parakeets to reach not only anthropogenic food but also crops, thereby increasing the risk of crop damage as the invasion evolves. Early detection of damage to crops is crucial in order to prevent further harm, and makes the precautionary principle highly relevant.


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