| Titre : | Population dynamics of the introduced Roseringed Parakeet Psittacula krameri in Ile-de-France (2015) |
| Auteurs : | Philippe Clergeau, Auteur ; Olivier Leroy, Auteur ; Pauline Lenancker, Auteur |
| Type de document : | Article |
| Dans : | Alauda (83(3) 2015) |
| Article en page(s) : | 165-174 |
| Résumé : | Originally distributed in subtropical areas, the Rose-ringed Parakeet was accidentally introduced to Europe through the escape of captive individuals. The bird is now established in several European towns such as the suburbs of Paris (Ile-de-France region). In order to update the population size and distribution of the Roseringed Parakeet in Ile-de-France, we estimated the number of birds at their roosts, counted the number of nests in public parks and initiated public participation calls to obtain data from townsfolk. Since its introduction in the midseventies, the Parakeet's population size has grown exponentially and now reaches 5000 individuals. It is now distributed throughout Ile-deFrance in 150 townships which cover a total area of 5152 km2. Most bird breeding cavities were found in urban parks and all of them were situated higher than 8 meters on large trees. The high concentration of nests and their exponential growth in single areas such as in the parc departemental in Sceaux (2 nests in 2003 and at least 80 in 2014) raises concerns on the parakeet competition with protected bird species found in the park. The public habit of feeding the birds in this area appears to explain such a high density. Other factors explaining their recent introduction events and the bird's resistance to various ecological conditions. This study provides up to date information on the Rose-ringed Parakeet situation in Ile-de-France and show that the bird population and distribution are still growing. |
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