Video evidence of siblicide and cannibalism, movement of nestlings by adults, and interactions with predators in nesting Hen Harriers

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dc.contributor.author Fernández-Bellon, Darío
dc.contributor.author Wilson, Mark W.
dc.contributor.author Irwin, Sandra
dc.contributor.author Kelly, Thomas C.
dc.contributor.author O'Mahony, Barry
dc.contributor.author O'Halloran, John
dc.date.accessioned 2018-09-26T10:51:18Z
dc.date.available 2018-09-26T10:51:18Z
dc.date.issued 2018-09
dc.identifier.citation Fernández-Bellon, D., Wilson, M. W., Irwin, S., Kelly, T. C., O'Mahony, B. and O'Halloran, J. (2018) 'Video evidence of siblicide and cannibalism, movement of nestlings by adults, and interactions with predators in nesting Hen Harriers', Journal of Raptor Research, 52(3), pp. 393-399. doi:10.3356/JRR-17-58.1 en
dc.identifier.volume 52 en
dc.identifier.issued 3 en
dc.identifier.startpage 393 en
dc.identifier.endpage 399 en
dc.identifier.issn 0892-1016
dc.identifier.uri http://hdl.handle.net/10468/6908
dc.identifier.doi 10.3356/JRR-17-58.1
dc.description.abstract During a nest-camera study of Hen Harriers (Circus cyaneus), we recorded siblicide, cannibalism, movement of nestlings by adult birds, and interactions with predators. We deployed cameras at 13 nests across three study areas in Ireland between 2008 and 2010. At a nest with two well-developed nestlings (approximately 25–30 d old), the older nestling killed its sibling and fed on it. This was the first documented case of siblicide in this species, to our knowledge. Recordings also revealed three other events of cannibalism in which one of the nestlings in a brood died from unknown causes and was then eaten by its siblings (n = 1), by the adult male (n = 1), or was used by the adult female to feed the remaining nestlings (n = 1). At two nests, recordings showed the adult female picking up and moving nestlings that were outside the nest cup. In addition, cameras recorded two instances of full brood predation by red fox (Vulpes vulpes) and an attack on a nest by a female Eurasian Kestrel (Falco tinnunculus) that had no apparent consequences for the nestlings or the female Hen Harrier. The behaviors reported here, which are difficult to observe directly, may have important consequences for our understanding of productivity and population dynamics of Hen Harriers. en
dc.description.abstract Durante un estudio sobre patrones de actividad de individuos reproductores de Circus cyaneus realizado con cámaras para monitoreo de nidos, registramos comportamientos de fratricidio, canibalismo, movimientos de polluelos e interacciones con depredadores. Colocamos cámaras en 13 nidos distribuidos en tres áreas de estudio en Irlanda entre 2008 y 2010. En un nido con dos polluelos en un estado de desarrollo avanzado (c. 25-30 días), el polluelo de mayor edad mató al otro y se alimentó de él. Este es el primer caso documentado de fratricidio en esta especie. Obtuvimos imágenes de otros tres casos de canibalismo en que uno o más polluelos fallecieron por causas desconocidas y sus cadáveres fueron usados como alimento por los otros polluelos (n = 1), por el macho adulto (n = 1) o por la hembra adulta para alimentar a los otros polluelos (n = 1). En dos nidos, las imágenes muestran a la hembra adulta repetidamente recogiendo polluelos que se alejan del nido para intentar llevarlos al nido. Por último, las cámaras captaron dos eventos de depredación de polluelos por parte de Vulpes vulpes y un enfrentamiento entre la hembra adulta de C. cyaneus y una hembra de Falco tinnunculus sin consecuencias para los polluelos o la hembra adulta. Estos comportamientos, difíciles de detectar mediante metodologías de monitoreo tradicionales, pueden tener consecuencias para el éxito reproductivo y la dinámica poblacional de esta especie. es
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Raptor Research Foundation en
dc.relation.uri https://doi.org/10.3356/JRR-17-58.1
dc.rights © 2018, the Raptor Research Foundation, Inc. All rights reserved. en
dc.subject Hen Harrier en
dc.subject Circus cyaneus en
dc.subject Cannibalism en
dc.subject Nest camera en
dc.subject Nest defense en
dc.subject Nestling moving en
dc.subject Siblicide en
dc.subject Sibling aggression en
dc.title Video evidence of siblicide and cannibalism, movement of nestlings by adults, and interactions with predators in nesting Hen Harriers en
dc.title.alternative Evidencia en video de fratricidio y canibalismo, movimiento de polluelos e interacciones con depredadores en nidos de Circus cyaneus es
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Dario Fernandez-Bellon, School Of Bio, Earth & Env Sciences, University College Cork, Cork, Ireland. +353-21-490-3000 Email: dfernandezbellon@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2018-09-26T10:42:16Z
dc.description.version Published Version en
dc.internal.rssid 455594127
dc.contributor.funder National Parks and Wildlife Service en
dc.contributor.funder Department of Agriculture, Food and the Marine en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Raptor Research en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress dfernandezbellon@ucc.ie en


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