2014
DOI: 10.1017/s095927091300049x
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Breeding to non-breeding population ratio and breeding performance of the globally Endangered Lear’s MacawAnodorhynchus leari: conservation and monitoring implications

Abstract: SummaryLear’s Macaw Anodorhynchus leari is currently listed as “Endangered” by IUCN. Although it only breeds on cliffs at two protected sites in Bahia State, Brazil, there is no accurate information on population parameters such as the number of breeding pairs and their breeding performance. Between 2009 and 2010, we sought to quantify, for the first time, breeding population size and the main breeding parameters for the species in the two known breeding sites, by quantifying the number of active nests and mon… Show more

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Cited by 22 publications
(39 citation statements)
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“…1200 individuals, is concentrated in a few breeding sites within a radius of ca. 50 km [86]. The Pantanal, and especially the Cerrado biome, are experiencing a rapid loss of vegetation cover due to deforestation for agriculture and livestock grazing [87,88].…”
Section: The Loss Of Palm-macaw Mutualismsmentioning
confidence: 99%
“…1200 individuals, is concentrated in a few breeding sites within a radius of ca. 50 km [86]. The Pantanal, and especially the Cerrado biome, are experiencing a rapid loss of vegetation cover due to deforestation for agriculture and livestock grazing [87,88].…”
Section: The Loss Of Palm-macaw Mutualismsmentioning
confidence: 99%
“…Roost surveys have been used to estimate abundance when parrots are widely dispersed (e.g. Gnam and Burchsted 1991;Casagrande and Beissinger 1997;Pithon and Dytham 1999;Downs 2005;Matuzak and Brightsmith 2007;Burnham et al 2010), and are especially useful to estimate population size when the local and even global populations seasonally concentrate into a few communal roosts (Martinez and Prestes 2008;Tella et al 2013;Pacífico et al 2014;Luna et al 2017). This method requires previous fieldwork to locate the roosts, often facilitated by local knowledge since roost sites are sometimes used for decades (e.g.…”
Section: Roost Surveysmentioning
confidence: 99%
“…Individuals are concentrated in three subpopulations with a maximum of 16 known breeding pairs occurring over a vast region (Berkunsky et al 2014). As has been found in other ‘Endangered’ macaw species (Tella et al 2013, Pacífico et al 2014), breeding individuals might constitute a small fraction of the overall population. However, due to logistical difficulties and limited accessibility to a large part of its distributional range, the population size and breeding and global distribution of the species could have been underestimated.…”
Section: Introductionmentioning
confidence: 62%