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 […]
Category: Psittacidae
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 […]
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 […]
ROOSTING BEHAVIOR OF THE BROWN-THROATED PARAKEET(ARATINGA PERTINAX) AND ROOST LOCATIONS ON FOURSOUTHERN CARIBBEAN ISLANDS
Brown-throated Parakeet (Aratinga pertinax) Science Article 1 abstract The four subspecies of the Brown-throated Parakeet (Aratinga pertinax) endemic to the southernCaribbean islands of Aruba, Bonaire, Curacao, and Margarita form nocturnal roosts of several dozento several hundred birds on their respective islands. The locations of the roosts were stable during our onetotwo-week visits to each of […]
Molecular markers for population genetic analysesin the family Psittacidae (Psittaciformes, Aves)
Blue-and-yellow Macaw (Ara ararauna) Science Article 1 abstract The selection of molecular markers for population studies is an important tool for biodiversity conservation. The familyPsittacidae contains many endangered and vulnerable species and we tested three kinds of molecular markers fortheir potential use in population studies of five psitacid species: 43 hyacinth macaws (Anodorhynchus hyacinthinus),42 blue-and-yellow […]
Yellow-faced Parrotlet (Forpus xanthops)
[order] PSITTACIFORMES | [family] Psittacidae | [latin] Forpus xanthops | [authority] Salvin, 1895 | [UK] Yellow-faced Parrotlet | [FR] Toui a tete jaune | [DE] Gelbmasken-Sperlingspapagei | [ES] Cotorrita Carigualda | [NL] Geelwangmuspapegaai | [copyright picture] Birdlife Subspecies Monotypic species Genus The genus Forpus consists of seven recognized species that are distributed in the lowlands […]
Yellow-billed Amazon (Amazona collaria)
[order] PSITTACIFORMES | [family] Psittacidae | [latin] Amazona collaria | [authority] Linnaeus, 1758 | [UK] Yellow-billed Amazon | [FR] Amazone sasabe | [DE] Jamaicaamazone | [ES] Amazona Jamaicana Piquiclara | [NL] Geelsnavelamazone | [copyright picture] Birdlife Subspecies Genus Species subspecies Region Range Amazona collaria NA Jamaica Genus Amazon parrot is the common name for a […]