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Saving the Symbol of the Andes: A Range Wide Conservation Priority Setting Exercise for the Andean Condor (Vultur gryphus)

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***SPANISH VERSION AVAILABLE*** The Range-Wide Priority Setting Exercise aimed to assess the distribution and conservation status of the Andean condor, and consolidate all available information on the species, currently dispersed and scattered from all different sources, to be translated into a conservation strategy, including the participative definition of Andean Condor Conservation Units (ACCUs). The exercise anticipated that these ACCUs consider threats, distribution, and relative abundance, potentially important factors for selecting specific c sites for long-term conservation investment, as well as studies and population monitoring on behavior, reproduction, and distribution. The exercise also hoped to produce an action plan and distribution map for dissemination across the bird’s range, as well as crucial conversation among the important actors in the conservation of the Andean condor.
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... The Andean condor's habit of assembling in communal roosts (see "studied species and data collection" in Materials and Methods section), where most of these surveys were conducted, provides a low-cost and non-invasive opportunity for gathering data for science-based conservation plans (Bibby et al., 2000, but see Perrig et al., 2019. However, there are no specific protocols for these surveys (but see Wallace et al., 2022), which could lead to erroneous conclusions about what communal roosts we should prioritize for conservation (Miguel et al., 2019;Wallace et al., 2020). In addition, scarce financial resources, logistic requirements, and trained staff limit long-term surveys (Ellis & Taylor, 2017;Vieira, 2020). ...
... On the other hand, seasonality might not be a concern for areas with more stable climatic conditions. Finally, as expected, given that Andean condors can travel long distances (see Piana & Vargas, 2018;Perrig et al., 2020), protected areas could be an essential conservation tool for this species, but not alone (see Guido et al., 2020;Wallace et al., 2020). Instead, a network of protected areas, including communal roosts with different environmental characteristics, is important to provide adequate protection for Andean condors . ...
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Background: Among the New World vultures, the Andean condor is considered one of the most culturally and ecologically important species. However, their populations are declining over their entire distributional range. In response, conservation strategies have been implemented in many countries to reverse the increasing extinction risk of this species. The initiatives rely on extensive population surveys to gather basic information necessary to implement policies and to intervene efficiently. Still, there is a need to standardize the surveys based on seasonality and suitable environmental conditions throughout the species distribution. Here, we provide the first assessment of how daily temperature, rainfall, and seasonality influence surveys of Andean condors on a communal roost in the central Peruvian Andes. Methods: Using an autoregressive generalized linear model, we associated environmental variables with visual surveys of adult and young condors at three different times of the day and three times a week between June 2014 and March 2015. Results: We found that both adults and young Andean condors showed a threefold reduction in the use of the communal roost after the beginning of the rainy season. Colder and drier days (dry season) are preferable for surveying, as we expect the total number of condors using communal roosts to reduce under rainy (rainfall = −0.53 ± 0.16) and warmer days (temperature = −0.04 ± 0.02) days. Therefore, the significant variation in the use of roosts across seasons and hours should be carefully accounted for in national surveys, at the risk of undermining the full potential of the communal roost surveys. Moreover, we also found a strong bias towards immatures (about 76%) in the adult:immature ratio and a remarkable absence of Andean condors during the wet season. These results suggest that the species might be using other unknown communal roosts hierarchically. Such results provide key information for selecting priority areas for conservation and selecting the best time to survey this species in the tropical Andes. Finally, it may open a fruitful avenue for further research on the protection of the Andean condor.
... In Venezuela, the historic distribution of the species was described from eight records in the Merida Cordillera and Sierra de Perijá. However, it is considered that these condors may actually have been from Colombia [24,25]. Its resident species status has been questioned by the Venezuelan ornithologist community, and the Andean Condor is likely a transient visitor in this country, since there is no evidence of its natural history, breeding biology, or any archaeological or anthropological records showing otherwise [24]. ...
... Andean Condor reintroduction efforts were carried out between 1989 and 2013 in Colombia, between 1993 and 2001 in Venezuela, and during 2016 in Ecuador. In these efforts, 71, 13 and three captive-born individuals were released in these countries, respectively [23,25,32] (S1 Table). We found that at least 17% of the condors released in Colombia, and 15% of those released in Venezuela, were affected by anthropogenic causes. ...
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Vultures comprise one of the most threatened groups of birds worldwide. With a total population not exceeding 6700 mature individuals, and in rapid decline across its range, the Andean Condor (Vultur gryphus) is listed as a Vulnerable species in the IUCN red list. Local population extinctions and decline are of particular concern in northern South America, where no more than 340 condors may exist at present. Despite this, no quantitative assessments exist in Ecuador, Colombia, and Venezuela regarding the threats affecting Andean Condor populations. To address this, we compiled records of Andean Condors injured, or killed, between 1979 and 2021. We obtained data of 164 condors affected by different causes of injury, of which 83.5% were reported in Ecuador, 15.2% in Colombia, and 1.2% in Venezuela. Of the total number, 84.7% of the injured individuals died. Between 1979 and 2021, in Ecuador, Colombia and Venezuela, at least 103 Andean Condors were presumably poisoned, 22 were shot, and 39 individuals were affected by other causes. The total number of individuals affected by different causes represents between 48% and 72% of the total population estimated in northern South America. Of great concern is the fact that, between 2007 and 2021, poisoning and shooting together caused the loss of 19–31% of the estimated population of condors in Ecuador, and 7–21% of the estimated population in Colombia. Given the important mortality induced by humans, environmental education programs, socio-ecological research, application of environmental laws, and management strategies based on scientific evidence to prevent and mitigate human-wildlife conflicts are urgently required for effective Andean Condor conservation in northern South America.
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Usamos la metodología Distance en 40 transectos lineales distribuidos aleatoriamente en un área de 100 km2 localizada en el desierto costero del noroeste de Perú para calcular la densidad absoluta del Cóndor Andino (Vultur gryphus) y como su presencia se relaciona con la abundancia de carroña y otras variables ambientales. Estimamos una población de 35 Cóndores Andinos en nuestra zona de estudio o el 10% de la población estimada para Perú, confirmando la importancia de la Reserva Nacional de Illescas para la conservación del Cóndor Andino en el país. La carroña fue altamente predecible a lo largo de las playas, aunque en nuestra área de estudio, el número de carroñas fue un pobre predictor de la presencia de Cóndores Andinos. Investigación ganadora del Concurso de Becas SERNANP para investigaciones en Áreas Naturales Protegidas, realizado en alianza estratégica con el Fondo de Promoción de las Áreas Naturales Protegidas del Perú (Profonanpe) y el Consorcio de Investigación Económica y Social (CIES).
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The Andean Condor (Vultur gryphus) is a culturally iconic wildlife symbol for the South American Andes, but is naturally found at very low population densities, and is increasingly threatened. Using the Range Wide Priority Setting methodology, we (a group of 38 Andean Condor experts) updated the Andean Condor historical range (3,230,061 km2), systematized 9998 Andean Condor distribution points across the range, and identified geographic areas for which there was expert knowledge (66%), including areas where Andean Condors no longer occur (7%), and geographic areas where condors are believed to range, but for which there was not expert knowledge about condor presence (34%). To prioritize conservation action into the future and identify existing Andean Condor population strongholds, we used expert knowledge to identify 21 of the most important areas for the conservation of the species (i.e., Andean Condor Conservation Units [ACCUs]) that cover 37% of the revised historical range, and range in size from 837 km2 to 298,951 km2. In general, ACCUs were relatively small in the northern portion of the range in Venezuela, Colombia, Ecuador, and northern Peru, and significantly larger in the central and southern portion of the range in Peru, Bolivia, Chile, and Argentina, reflecting the reduced and narrower historical range in the northern portion of the range, as well as increased threats. Andean Condors can fly extremely long distances and so the populations of many neighboring ACCUs are probably still functionally connected, although this situation also underlines the need for integrated and large-scale conservation efforts for this species. As a function of the Range Wide Priority Setting results, we make recommendations to ensure population connectivity into the future and engage a wide range of actors in Andean Condor conservation efforts.
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RESUMEN La ignorancia y la visión restringida que de los Andes venezolanos se tiene en Venezuela, ha traído como consecuencia que el término "Cóndor de los Andes" se refiera a una especie autóctona de nuestra región. Cuando en Venezuela se habla de los Andes, sin especificar el área geográfica que se desea referir de la totalidad de los Andes, se entiende por la pequeña porción que tenemos de Andes en nuestro país. De esta manera, cuando hablamos del Cóndor de los Andes se piensa que es una especie residente en nuestros Andes, error que se ha arrastrado en la literatura al referir los pocos avistamientos, complementando que es una especie en extinción en nuestro país. Sin embargo, la especie jamás fue residente, siendo sólo un visitante ocasional en nuestro país. Nuestros Andes, a diferencia de los Andes del Sur, es un ecosistema que jamás proporcionó recursos tróficos suficientes para mantener una población de cóndores durante largo tiempo, ni a un sólo grupo familiar en actividades reproductivas, cuando su gasto energético es mayor. El Cóndor de los Andes en Venezuela es sólo un visitante ocasional y su introducción en nuestros Andes constituye un peligro para la supervivencia de aves autóctonas así como para otros necrófagos vertebrados e invertebrados.
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Protected area systems are the corner stone for biodiversity conservation globally yet their spatial distribution is key to fulfil this. In this study, I evaluated the role of strictly protected areas in Peru in protecting the potential distribution area (PDA) of eight threatened diurnal raptor species. PDA of species ranged from 5766 km² (Gray-backed Hawk –Pseudastur occidentalis) to 699229 km² (Gray-bellied Hawk –Accipiter poliogaster). On average, strictly protected areas covered 11.3% of species PDA, with higher percentages for the most range-restricted species (Gray-backed Hawk; 26.3% of PDA). This was not the case for the wide ranging and locally threatened (Andean Condor –Vultur gryphus; 2% of PDA) or for small species restricted to montane forests (Semicollared Hawk –Accipiter collaris; 3.5% of PDA). My results call for an integrated conservation approach for threatened raptor species that focus on habitat preservation beyond protected area limits. This is particularly urgent for the Andean Condor and the Black-and-chestnut Eagle (Spizaetus isidori), two species with diminishing populations globally. For the latter, habitat conservation through the protection of montane forests inside indigenous communities in the north and central Andes could be a viable option to the creation of protected areas.
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Despite global conservation crises,widespread and poorly regulated toxic pesticides still cause preventable tragedies. Carbofuran, a carbamate pesticide, is the most implicated globally. In January,the latest and most shocking known poisoning incident in South America took place in Argentina, where a single Carbofuran baited sheep carcass set out by ranchers to combat mammalian predators killed 34 Andean condors (Vultur gryphus), a threatened, emblematic species of the Andes. This incident raised the number of Andean Condors poisoned in Argentina to at least 66 in the past 13 months. We must take urgent action to prevent future poisoning incidents.
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