Juan Sebastián Restrepo-Cardona

University of Florida | UF · Department of Wildlife Ecology and Conservation

Conflicts between rural people and the Endangered Black-and-chestnut Eagle (Spizaetus isidori) are a prominent conservation concern in the northern Andes, as at least 60 eagles were poached between 2000 and 2022 in response to poultry predation. Here, we conducted direct observations to analyze the Black-and-chestnut Eagle diet and evaluated how fo...

Little information exists on the breeding behavior of the Andean Condor (Vultur gryphus). Its global population, estimated at 6700 adult individuals, is declining throughout its distribution range. With less than 150 condors, the Endangered condor population in Ecuador is of conservation concern. This study aimed to analyze the breeding behavior of...

Background and Research Aims Native vertebrate scavenger communities may be affected by free-ranging dogs ( Canis lupus familiaris), but little information is available on this subject. We aimed to evaluate the influence of free-ranging dogs on a community of native vertebrate scavengers and to propose management and conservation actions. Methods...

Vultures are one the most threatened group of birds worldwide. With a global population of less than 6700 adult individuals, the Andean Condor (Vultur gryphus) is listed as a Vulnerable species, while the population in Ecuador is Endangered. The Andean Condor Research Project in Ecuador was initiated in 2012, with the aim of increasing knowledge on...

The New World Vultures (Cathartidae) include seven species of obligate scavengers that, despite their ecological relevance, present critical information gaps around their evolutionary history and conservation. Insights into their phylogenetic relationships in recent years has enabled the addressing of such information gaps through approaches based...

Background and Research Aims: The Black-and-chestnut Eagle (Spizaetus isidori) has a total population of fewer than 1000 adult individuals, and is categorized as Endangered at the global level. The northern Andes (Ecuador and Colombia) represent one of the last population strongholds of the species. In this study, we analyzed human persecution of t...

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...

El cóndor andino, se distribuye a lo largo de los Andes desde el occidente de Venezuela hasta el sur en Argentina y Chile. Habita en páramos, bosques montanos y paisajes rurales. Su población total probablemente no supera los 6.700 individuos maduros y está disminuyendo de manera alarmante en toda su área de distribución, por lo que está categoriza...

Estudios del cóndor andino se han enfocado en estimar la estructura poblacional de la especie para evaluar su estado poblacional. El objetivo del estudio fue describir la estructura poblacional del cóndor andino en zonas de alimentación dentro del Área de Protección Hídrica Antisana. Entre noviembre de 2019 y diciembre de 2021, se realizó un seguim...

Colombia alberga más de 1900 especies de aves y pese al incremento en la información publicada sobre las aves reportadas en el país, la información acerca de la distribución de gran parte de las especies listadas en Colombia sigue siendo escasa. A partir de visitas no sistemáticas a campo, búsqueda y revisión de información en listados de aves en p...

Los animales carroñeros tienen un papel de gran importancia en los procesos ecológicos de los ecosistemas. Sin embargo, la información sobre amenazas y ecología de este grupo funcional en la zona andina es deficiente. Desde noviembre de 2014 a junio de 2016 se monitorearon 35 carroñas experimentales (ganado vacuno) y dos naturales (caballo, alpaca)...

La planificación para la conservación de la biodiversidad requiere de enfoques participativos interdisciplinarios. El plan de acción para la conservación de las aves en la Reserva Forestal Protectora Río Blanco, tiene el propósito de plantear una hoja de ruta para articular y potenciar la gestión para la conservación de las especies y sus hábitats....

This study quantitively compares the diets of the Stygian Owl (Asio stygius) and the Short-eared Owl (A. flammeus) in the southwest of the Bogotá Savanna, Colombia. We identified 130 prey items from 111 A. stygius pellets and 579 prey items from 149 A. flammeus pellets. In terms of the numbers of preys, the diet of A. stygius consisted of the follo...

El águila inca (Spizaetus isidori) habita en bosques montanos a lo largo de los Andes. Su población global se estima en menos de 1000 individuos adultos, por lo cual está categorizada En Peligro. En Colombia y Ecuador, se ha estudiado su dieta y se han cuantificado las causas de mortalidad en los últimos 10 años. Presentamos los principales resulta...

La mayor parte de las poblaciones de aves rapaces están declinando y el 18% de las especies, están listadas como globalmente amenazadas. Este es el caso del águila Inca, Spizaetus isidori, distribuida en seis países de América del Sur: Venezuela, Colombia, Ecuador, Bolivia, Perú y Argentina. Entre el 2017 y el 2021, hemos constituido y fortalecido...

In human-transformed landscapes, predators may feed on domesticated animals, and thus affect human well-being, creating negative perceptions and leading to conflict with people that can result in the persecution of the predator. We studied the factors that influence the perception of the Black-and-chestnut Eagle (Spizaetus isidori) in four rural An...

We examined the diet of the Great Horned Owl (Bubo virginianus) through the analysis of pellets and prey remains collected during the breeding seasons of 2014 and 2015 at a nest found in an grassy páramo at an elevation of 4,020 m, municipality of Murillo, Tolima, in the Central Andes of Colombia. We identified 78 food items recovered from 58 pelle...

Despite its cultural importance as a key component of the Andean landscape, some perceptions of rural inhabitants towards the Andean condor (Vultur gryphus Linnaeus, 1758) persist, as they relate to the possible predation of domestic animals such as sheep and cattle. These perceptions are compounded by only a basic knowledge of the natural history...

In anthropogenically transformed habitats, some birds of prey feed on domestic animals, triggering conflict between people and predators. To manage this conflict, it is important to understand the ecological circumstances associated with the predation of domestic animals. We studied variation in the diet of the endangered Black-and-chestnut Eagle (...

En hábitats transformados antrópicamente algunas rapaces pueden alimentarse de animales domésticos, generando percepciones negativas e impulsando conflictos con las personas, lo cual desencadena persecución a especies amenazadas. Estudiamos la dieta del águila crestada (Spizaetus isidori) y los factores que determinan las percepciones hacia ella y...

Dietary studies are one of the most developed research areas in biology and ecology studies of Neotropical owls, but most of these studies have focused on few species. Our study describes the diet of Barn Owl (Tyto alba), Spectacled Owl (Pulsatrix perspicillata), and Rufous-banded Owl (Strix albitarsis) in Jardin and Ciudad Bolivar, western Andes o...

Birds must adjust their breeding phenology to environmental variation and resource availability to maximize their fitness. In temperate climates, birds reproduction is usually seasonal and changes latitudinally. In the Neotropics, these patterns are less clear with some species having marked breeding seasonality and others a less clear pattern. The...

Between 1989–2013, 69 Andean Condors (Vultur gryphus) were reintroduced in eight sites in the Andes of Colombia. Due to the lack of monitoring programs, little is known about the ecology and biology of these reintroduced populations. We present the first observations on a reintroduced breeding pair. For 36 months, we examined the breeding behavior...

Este trabajo tiene el objetivo de ilustrar como el ensamblaje de pequeños mamíferos andinos aporta a la dieta de cuatro especies de búhos Tyto alba, Strix albitarsis, Bubo virginianus y Pulsatrix perspicillata, en términos de diversidad, frecuencias de aparición y aportes de biomasa.

We compiled existing information on the 28 owl species found in Colombia and evaluated information gaps. We found 23 species in the Andes and inter-Andean valleys, 15 in the Caribbean, 10 in the Pacific, 10 in the Orinoco region, 10 in the Amazon, and 4 in the isolated Sierra Nevada de Santa Marta mountain system, including one undescribed species....

Black-and-chestnut Eagle (Spizaetus isidori) it’s distributed along the Andes from Colombia to Argentina, considered forest dependent and highly susceptible to anthropogenic perturbations. In Colombia, it is estimated that it has lost 60.6% of its habitat and is subject to hunting pressure, categorized as Endangered. Domestic fowl has been reported...

Resumen. - Realizamos la recopilación de la información generada de las 27 especies de búhos que se encuentran en Colombia y evaluamos los principales vacíos de información. Encontramos, por regiones del país, la presencia de 23 especies en los Andes y Valles Interandinos, 15 en la Caribe, 10 en la Pacífica, 10 en la Orinoquia, nueve en la Amazónic...