FOOD HABITS AND TROPHIC ATTRIBUTES OF THE MAGELLANIC HORNED OWL (<i>BUBO MAGELLANICUS</i>) IN THE PATAGONIAN STEPPE, SOUTHERNMOST CHILE

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dc.contributor.authorMartinez, David R.
dc.contributor.authorAlvarez-Cortez, Gabriela
dc.contributor.authorJaksic, Fabian M.
dc.date.accessioned2025-01-23T19:47:28Z
dc.date.available2025-01-23T19:47:28Z
dc.date.issued2020
dc.description.abstractFor most of southern South America, the food habits of Magellanic Horned owls (Bubo magellanicus) are well known. In Chile, several researchers have reported the owl's diet in northern xerophytic environments, as well as subpolar forests; however, other than a short note on the owls' summer diet in Punta Dungeness (Martinez 2018), no major studies have documented the food habits of Magellanic Horned owls in the Chilean Patagonian steppe. Based on 278 fresh pellets, we reported the food habits of owls inhabiting two sites located at > 52 degrees S in the southernmost Patagonian steppe in continental Chile, and compared our findings with those reported for owls inhabiting eight localities from 39 to 52 degrees S in the Argentinean Patagonian steppe. Our results indicate that in Patagonian steppe environments of both Argentina and Chile, the Magellanic Horned Owl is a generalist predator, which consumes whatever prey available, ranging in size from invertebrates to introduced juvenile lagomorphs. Because all five major vertebrate prey here reported (Abrothrix olivacea, Loxodontomys micropus, Microcavia australis, Reithrodon auritus, Lepus europaeus) are broadly distributed in the Argentinean Patagonian steppe and occur abundantly from 36 degrees S southwards to the Strait of Magellan and Isla Grande de Tierra del Fuego, their generalized occurrence as prey does not allow for expression of latitudinal trends in species composition in the owl's diet.
dc.fuente.origenWOS
dc.identifier.issn1075-4377
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100384
dc.identifier.wosidWOS:000582560500001
dc.language.isoen
dc.pagina.final51
dc.pagina.inicio47
dc.revistaOrnitologia neotropical
dc.rightsacceso restringido
dc.subjectBubo magellanicus
dc.subjectCaviidae
dc.subjectLeporidae
dc.subjectMagellanic Horned Owl
dc.subjectPatagonian steppe
dc.subject.ods13 Climate Action
dc.subject.ods15 Life on Land
dc.subject.odspa13 Acción por el clima
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleFOOD HABITS AND TROPHIC ATTRIBUTES OF THE MAGELLANIC HORNED OWL (<i>BUBO MAGELLANICUS</i>) IN THE PATAGONIAN STEPPE, SOUTHERNMOST CHILE
dc.typeartículo
dc.volumen31
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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