1. Sunning behavior of five Accipitridae species in the Peruvian Amazon rainforest/Comportamiento de asoleamiento de cinco especies de Accipitridae en el bosque lluvioso amazonico peruano
- Author
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Arana, Alejandra, Esteves, Juan F., Arana, Cesar, Carrillo-Percastegui, Samia E., Tobler, Mathias W., Zuniga, Alfonso, and Salinas, Letty
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Animal behavior -- Analysis ,Rain forests -- Brazil ,Hygiene -- Analysis ,Hawks -- Analysis ,Biological sciences - Abstract
We document 26 incidents of sunning behavior in 5 species of Accipitridae, including Crested Eagle (Morphnus guianensis), Black Hawk-Eagle (Spizaetus tyrannus), Ornate Hawk-Eagle (Spizaetus omatus), Roadside Hawk (Rupomis magnirostris), and White Hawk (Pseudastur albicollis), during a camera-trap survey conducted in Madre de Dios, Peru, in 2014. The sunning behavior was observed in forest clearings along logging trails and on a dirt road. We recorded 2 high-intensity sunning postures: 'full-spreadeagle,' in which the bird lies horizontally on the ground with wings outstretched, tail fanned, and head somewhat raised; and 'full-spread,' in which the bird stands while holding its wings out at right angles to the body. Sunning is a maintenance behavior observed in many bird species and has been reported in Accipitriformes in various habitats, but it is not commonly observed in tropical rainforests because of low visibility. Our camera traps recorded sunning behavior from 0931 h to 1400 h, a period in which ambient temperature increased until reaching its maximum around 1400 h. The most likely function of sunning in Accipitriformes in the rainforest is an anti-ectoparasite strategy. Camera-trap monitoring has been useful in detecting unusual interactions and diel patterns of activity, and researchers can obtain a wide range of natural history, ecological, and behavioral insights that would be difficult to obtain using traditional methods. We recommend analyzing 'bycatch' data from camera traps to recover information about bird behaviors that would otherwise be unattainable. Received 1 October 2023. Accepted 10 June 2024 ... Key words: Accipitridae, Amazon, birds, camera traps, maintenance, sun-bathing. (Spanish)--Se documenta 26 eventos de comportamiento de asoleamiento en cinco especies de Accipitridae, incluyendo el Aguila Crestada (Morphnus guianensis), Aguila Negra (Spizaetus tyrannus), Aguila Penachuda (Spizaetus omatus), Aguilucho Caminero (Rupomis magnirostris) y Gavilan Blanco (Pseudastur albicollis), registrados durante un estudio con camaras trampa en Madre de Dios, Peru, en 2014. El comportamiento de asoleamiento se observo en claros del bosque y trochas. Se registraron dos posturas de asoleamiento intenso, tambien llamadas 'Posturas de Alas Extendidas' segun Simmons (1986): 'aguila con alas extendidas completas', en que el ave se acuesta horizontalmente en el suelo con las alas extendidas, la cola abanicada y la cabeza algo elevada; y 'extension completa', en que el ave se para con las alas extendidas en angulo recto al cuerpo. El comportamiento de asoleamiento es un comportamiento de mantenimiento observado en muchas especies de aves y ha sido registrado en Accipitriformes en varios habitats, pero no es comunmente observado en bosques lluviosos tropicales debido a la baja visibilidad. Nuestras camaras trampa registraron comportamiento de asoleamiento entre las 0931 h y las 1400 h, periodo en el cual la temperatura aumento hasta alcanzar su valor maximo alrededor de las 1400 h. La funcion mas probable del asoleamiento en Accipitriformes en la selva tropical es una estrategia and ectoparasitaria. El monitoreo con camaras trampa ha sido util para detectar interacciones inusuales y patrones de actividad diarios, permitiendo a los investigadores obtener una amplia gama de conocimientos sobre historia natural, ecologia y comportamiento que seria dificil de obtener utilizando metodos tradicionales. Recomendamos analizar los datos de 'captura incidental' para recuperar informacion que de otra manera seria inaccesible. Palabras clave: Accipitridae, Amazonas, asoleamiento, aves, camaras trampa, mantenimiento., Sunning is the behavior by which a bird adopts postures to expose itself to sunlight. It has been described in more than 50 bird families, including passerines and large non-passerines, [...]
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- 2024
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