El Oro Parakeet (Pyrrhura orcesi) Science Article 2 abstract A new species of parakeet, Pyrrhura orcesi sp. nov., from southwestern Ecuador is described and named the El Oro Parakeet. This species is most closely related to the Maroon-tailed Parakeet (P. melanura). Pyrrhura orcesi is restricted to a narrow band of forest, between ca 600 to […]
Category: Psittaciformes
Description of a New Species of Pionopsitta (Aves: Psittacidae) Endemic to Brazil
Bald Parrot (Pyrilia aurantiocephala) Science Article 1 abstract A new species from Brazil, Pionopsitta aurantiocephala, is described, which is easily distinguished from the other species of that genus by its completely bare, intensely orange colored head. Specimens of this species have been historically identified as immatures of P. vulturina, which occur in simpatry with P. […]
Distribution, ecology and conservation status of the Blue-headed Macaw Primolius couloni
Blue-headed Macaw (Primolius couloni) Science Article 1 abstract Until recently thought to be secure (i.e. Least Concern), the Blue-headed Macaw is now classified as Endangered in the IUCN Red List, based on an apparent decline and a population estimate of
Publishing LtdPhylogeny and biogeography of Yellow-headed andBlue-fronted Parrots (Amazona ochrocephalaandAmazona aestiva) with special reference to theSouth American taxa
Yellow-crowned Amazon (Amazona ochrocephala) Science Article 1 abstract The Yellow-headed Parrot (Amazona ochrocephala) has a broad Neotropical distribution,ranging from Mexico to the Amazon Basin, and a history of complex taxonomy and controversialspecies limits. Recent molecular analyses have started to clarify the taxonomicarrangement of the complex, but have not included a representative geographical samplingfrom South America. […]
Notes on the distribution and natural history of the Sun Parakeet Aratinga solstitialis solstitialis.
Sun Parakeet (Aratinga solstitialis) Science Article 1 abstract Knowledge of Aratinga solstitialis is reviewed and found to be mostly antiquated. The bird’s known range, though possibly consisting of two populations, seems more restricted than previously thought with no specimens or published records unequivocally from Venezuela and French Guiana despite remarks of some previous authors. There […]
Response of a Scarlet Macaw Ara macao population to conservation practices in Costa Rica
Scarlet Macaw (Ara macao) Science Article 2 abstract The Central Pacific Conservation Area contains one of Costa Rica’s two viable, but threatenedScarlet Macaw Ara macao populations. For 14 years (1990-2003), we monitored the size of thispopulation. Non-linear models fitted to 1990-1994 observations revealed seasonal and longtermchanges in population size. The peak of annual population size […]
A NEW SUBSPECIES OF SCARLET MACAW ANO ITS STATUS ANO CONSERVATION
Scarlet Macaw (Ara macao) Science Article 3 abstract Scarlet Macaws from northern Middle America (Mexico through Nicaragua) differ from those occurring from Costa Rica southward throughout the species’ range in South America. This new subspecies (ATa macav cyanoptera)differs in having yellow wing covert feathers tipped with blue, but with no green band separating the yellow […]
A new subspecies of Scarlet Macaw and its status and conservation
Scarlet Macaw (Ara macao) Science Article 1 abstract Scarlet Macaws from northern Middle America (Mexico through Nicaragua) differ from those occurring from Costa Rica southward throughout the species’ range in South America. This new subspecies (Ara macaw cyanoptera) differs in having yellow wing covert feathers tipped with blue, but with no green band separating the […]
Sexing and ageing Rose-ringed Parakeets Psittacula krameri in Britain
Rose-ringed Parakeet (Psittacula krameri) Science Article 1 abstract Although Rose-ringed Parakeets Psittacula krameri over three years old can easily be sexed due to the males’ rose-coloured neck-rings and black bibs, sexually immature males and females are considered impossible to separate in the hand. The biometrics of males and females overlap but males tend to be […]
Peach-fronted Parakeet feeding on winged termites
Peach-fronted Parakeet (Aratinga aurea) Science Article 1 abstract Insectivorous habits in parrots are reported for the Australasian genus Culyptorhynchus, which seem to feed habitually on larvae of wood-boring insects in addition to seeds and fruits (Forshaw 198 1). Among Neotropical psittacids insectivory is poorly known, although Forshaw (1981) believes that these birds are far more […]