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• W2904685947 abstract "Endemic species with distributions restricted to narrow elevational ranges in the Andes are among the least-known tropical birds and are also among the most vulnerable to anthropogenic pressures of climate change and habitat fragmentation. One such species is the Peruvian Piedtail (Phlogophilus harterti), a hummingbird endemic to the Andean foothills of central and southern Peru. To obtain basic ecological information and estimate population densities, we studied Peruvian Piedtails over an 12-year period (2006–2017) along an elevational gradient in Manu National Park in Peru. We calculated a density of 57.9 (95% CI: 36.2–81.4) individuals per km2, which is similar to estimates reported for other range-restricted Andean hummingbirds. Peruvian Piedtails were found at elevations between 867–1545 m, but were more common in areas with undisturbed forest, dense vegetation, and bamboo patches in a narrow elevational band of 400 m (900–1300 m). All nests were in dense clumps of hanging moss, and clutches always consisted of two eggs. The duration of incubation (19 d) and nestling (23 d) periods was within the range reported for other hummingbirds of similar size, but the growth rate of nestlings (K = 0.28) was relatively slow. Our observations suggest that Peruvian Piedtails are locally common, but only in specific habitats within their limited elevational range in southeastern Peru, and they may rely on patches of bamboo (Guadua sp.) for breeding. Thus, the broader extent of the occurrence and density of Peruvian Piedtails across their range should be evaluated to better inform their conservation status. Las especies Andinas con distribuciones restringidas en estrechas bandas altitudinales están entre las aves tropicales menos conocidas y a su vez entre las mas vulnerables al cambio climático y fragmentación. Una de estas especies es el Phlogophilus harterti, un colibrí endémico del Centro y Sureste de Perú. Estudiamos P. harterti por un periodo de doce años (2006–2017) para obtener información ecológica detallada y estimaciones de densidad poblacional en un gradiente altitudinal en el Parque Nacional Manu, Perú. Estimamos una densidad de 57.9 (95% CI: 36.2–81.4) individuos/km2, lo cual esta dentro del rango estimado para otros colibríes andinos con distribución restringida. Encontramos P. harterti en elevaciones entre los 867–1545 m, pero fueron mas abundantes en áreas con bosque conservado, vegetación densa y fragmentos de bambú entre los 900–1300 m. Los nidos (N = 34) se encontraron en sustratos cubiertos con musgo y el tamaño de la nidada fue de dos huevos. Los periodos de incubación (19 d) y polluelos (23 d) están dentro del rango estimado para otros colibríes de igual tamaño, pero la tasa de crecimiento de polluelos basada en masa (K = 0.28) fue relativamente lenta. Nuestras observaciones sugieren que P. harterti es localmente común, pero únicamente en hábitats específicos dentro de su limitado rango altitudinal en el Suroeste peruano, y que la especie puede depender de fragmentos de bambú para su reproducción. Por lo tanto, su área de ocurrencia global y densidad a lo largo de su rango deben ser revisados para evaluar su estado de conservación." @default.
• W2904685947 created "2018-12-22" @default.
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• W2904685947 date "2018-12-01" @default.
• W2904685947 modified "2023-09-23" @default.
• W2904685947 title "Combining multiple sources of data to uncover the natural history of an endemic Andean hummingbird, the Peruvian Piedtail ( Phlogophilus harterti )" @default.
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• W2904685947 doi "https://doi.org/10.1111/jofo.12275" @default.
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