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6 January 2023 First report of kleptotrichy by Large-billed Crows (Corvus macrorhynchos culminatus) from a live mammal
Pathissery John Sarlin, Sancia Morris
Author Affiliations +
Abstract

Many species of birds are known to collect and incorporate mammalian hair into their nests, presumably to augment their reproductive success. Birds source it from dead animals, shed hairs, and even live animals. Here, we report theft of hair (kleptotrichy) from a live cow by 2 Large-billed Crows (Corvus macrorhynchos culminatus) in India, along with photographic evidence. The crows strenuously plucked the hair from the tail of a resting cow. The crows flew away with beakfuls of hair and returned after 5 min to repeat the same. The function of kleptotrichy is not clearly known—thermal regulation and predator/parasite deterrence have been offered as explanations. This is the first report of kleptotrichy by Large-billed Crows from a live mammal.

Muchas especies de aves son conocidas por colectar e incorporar pelo de mamífero a sus nidos, supuestamente para aumentar su éxito reproductivo. Las aves lo extraen de animales muertos, pelo caídos o hasta animales vivos. Aquí reportamos robo de pelo (cleptotriquia) de una vaca viva por 2 cuervos Corvus macrorhynchos culminatus grandes en India, junto con evidencia fotográfica. Los cuervos arrancaron con fuerza pelos de la cola de una vaca en reposo. Los cuervos se fueron volando con los picos llenos de pelos y regresaron 5 min después para repetir lo mismo. La función de la cleptotriquia no es claramente conocida—se ha explicado tentativamente por regulación térmica y disuasión depredador/parásito. Este es el primer reporte de cleptotriquia de un animal vivo de un cuervo de esta especie.

Palabras clave: córvido, material de nido, pelo de mamífero, recolecta de pelo, robo de pelo.

Pathissery John Sarlin and Sancia Morris "First report of kleptotrichy by Large-billed Crows (Corvus macrorhynchos culminatus) from a live mammal," The Wilson Journal of Ornithology 134(4), 717-719, (6 January 2023). https://doi.org/10.1676/22-00054
Received: 4 May 2022; Accepted: 17 September 2022; Published: 6 January 2023
KEYWORDS
corvid
hair harvesting
hair theft
mammalian hair
nesting material
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