Red-backed Hawks supply food to scavenging Chimango Caracaras

References

• Aprile, G., and Bertonatti, C. (1996). ‘Manual Sobre Rehabilitación de Fauna.’ (Fundación Vida Silvestre Argentina: Buenos Aires, Argentina.)
   Google Scholar
• Baladrón, A. V., Bó, M. S., and Malizia, A. I. (2006). Winter diet and time-activity budgets of Red-backed Hawk (Buteo polyosoma) in the coastal grasslands of Buenos Aires Province, Argentina. Journal of Raptor Research 40, 65–70. doi: 10.3356/0892-1016(2006)40[65:WDATBO]2.0.CO;2
   Web of Science ®Google Scholar
• Bilenca, D., and Miñarro, F. (2004). ‘Identificación de áreas valiosas de pastizal en las pampas y campos de Argentina, Uruguay y Sur de Brasil.’ (Fundación Vida Silvestre Argentina: Buenos Aires, Argentina.)
   Google Scholar
• Biondi, L. M., Bó, M. S., and Favero, M. (2005). Dieta del Chimango (Milvago chimango) durante el periodo reproductivo en el sudeste de la provincia de Buenos Aires, Argentina. Ornitologia Neotropical 16, 31–42.
   Google Scholar
• Biondi, L. M., Bó, M. S., and Vassallo, A. I. (2008). Experimental assessment of problem solving in Milvago chimango (Aves: Falconiformes). Journal of Ethology 26, 113–118. doi: 10.1007/s10164-007-0035-2
   Web of Science ®Google Scholar
• Brockmann, H. J., and Barnard, C. J. (1979). Kleptoparasitism in birds. Animal Behaviour 27, 487–514. doi: 10.1016/0003-3472(79)90185-4
   Web of Science ®Google Scholar
• Bruno, J. F., Stachowicz, J. J., and Bertness, M. D. (2003). Inclusion of facilitation into ecological theory. Trends in Ecology & Evolution 18, 119–125. doi: 10.1016/S0169-5347(02)00045-9
   Web of Science ®Google Scholar
• Burger, J. (1988). ‘Seabirds and Other Marine Vertebrates: Competition Predation and Other Interactions.’ (Columbia University Press: New York.)
   Google Scholar
• Cabezas, V. M., and Schlatter, R. P. (1987). Hábitos y comportamiento alimentario de Milvago chimango Vieillot, 1816 (Aves, Falconidae). Anales del Museo de Historia Natural de Valparaiso 18, 131–141. http://www.dibam.cl/dinamicas/DocAdjunto_1261.pdf [Verified 11 August 2009].
   Google Scholar
• Canevari, M., Canevari, P., Carrizo, R., Harris, G., Rodríguez Mata, J., and Straneck, R. J. (1991). ‘Nueva Guía de las Aves Argentinas.’ (Fundación Acindar: Buenos Aires, Argentina.)
   Google Scholar
• Connor, R. C. (1996). Partner preferences in by-product mutualisms and the case of predator inspection in fish. Animal Behaviour 51, 451–454. doi: 10.1006/anbe.1996.0042
   Web of Science ®Google Scholar
• Copello, S., and Favero, M. (2001). Foraging ecology of Olrog's Gull Larus atlanticus in Mar Chiquita Lagoon (Buenos Aires, Argentina): are there age-related differences? Bird Conservation International 11, 175–188. doi: 10.1017/S0959270901000260
   Web of Science ®Google Scholar
• Crawley, M. J. (2007). ‘The R Book.’ (Wiley: Chichester, UK.)
   Google Scholar
• Daleo, P., Escapa, M., Isacch, J. P., Iribarne, O., and Ribeiro, P. (2005). Trophic facilitation by the oystercatcher Haematopus palliatus Temminick on the scavenger snail Buccinanops globulosum Kiener in a Patagonian bay. Journal of Experimental Marine Biology and Ecology 325, 27–34. doi: 10.1016/j.jembe.2005.04.022
   Web of Science ®Google Scholar
• Dickman, C. R. (1992). Commensal and mutualistic interactions among terrestrial vertebrates. Trends in Ecology & Evolution 7, 194–197. doi: 10.1016/0169-5347(92)90072-J
   PubMed Web of Science ®Google Scholar
• Ellis, D. H., Bednarz, J. C., Smith, D. G., and Flemming, S. P. (1993). Social foraging classes in raptorial birds. Bioscience 43, 14–20. doi: 10.2307/1312102
   Web of Science ®Google Scholar
• Eränen, J. K., and Kozlov, M. V. (2008). Increasing intraspecific facilitation in exposed environments: consistent results from mountain birch populations in two subarctic stress gradients. Oikos 117, 1569–1577. doi: 10.1111/j.0030-1299.2008.16772.x
   Web of Science ®Google Scholar
• Ferguson-Lees, J., and Christie, D. A. (2001). ‘Raptors of the World.’ (Houghton Mifflin Company: Boston, MA.)
   Google Scholar
• Fraga, R. M., and Salvador, S. A. (1986). Biología reproductiva del chimango (Polyborus chimango). Hornero 12, 223–229.
   Google Scholar
• Gaibani, G., and Csermely, D. (2007). Behavioral studies. In ‘Raptor Research and Management Techniques’. (Eds D. M. Bird and K. L. Bildstein.) pp. 129–151. (Hancock House: Blaine, WA, USA.)
   Google Scholar
• Isacch, J. P., Bó, M. S., Comparatore, V., Herrera, L., Vargas, R., and Martínez, M. M. (2001). Las aves de los pastizales costeros del Sudeste de la Provincia de Buenos Aires. In ‘Reserva de Biosfera Mar Chiquita: Características Físicas, Biológicas y Ecológicas’. (Ed. O. Iribarne.) pp. 269–285. (Editorial Martin: Mar del Plata, Argentina.)
   Google Scholar
• Malizia, A. I., Antinuchi, D., and Vassallo, A. I. (2001). Aspectos ecológicos de la comunidad de roedores de la reserva de Mar Chiquita con énfasis en el roedor subterráneo Ctenomys talarum. In ‘Reserva de Biosfera Mar Chiquita: Características Físicas, Biológicas y Ecológicas’. (Ed. O. Iribarne.) pp. 287–302. (Editorial Martin: Mar del Plata, Argentina.)
   Google Scholar
• Martin, P., and Bateson, P. (1993). ‘Measuring Behaviour: An Introductory Guide.’ (Cambridge University Press: Cambridge, UK.)
   Google Scholar
• Narosky, T., and Di Giácomo, A. (1993). ‘Las Aves de la Provincia de Buenos Aires: Distribución y Estatus.’ (Asociación Ornitológica del Plata, Vázquez Massini and L.O.L.A.: Buenos Aires, Argentina.)
   Google Scholar
• Newton, I. (1979). ‘Population Ecology of Raptors.’ (T. and A. D. Poyser: Berkhamsted, UK.)
   Google Scholar
• Oliver, T. H., Leather, S. R., and Cook, J. M. (2009). Tolerance traits and the stability of mutualism. Oikos 118, 346–352. doi: 10.1111/j.1600-0706.2008.17045.x
   Web of Science ®Google Scholar
• R Development Core Team (2008). ‘R: A Language and Environment for Statistical Computing.’ (R Foundation for Statistical Computing: Vienna, Austria.) Available at http://www.r-project.org/ [Verified February 2009].
   Google Scholar
• Rand, A. L. (1954). Social feeding behaviour in birds. Fieldiana Zoology 36, 1–71.
   Google Scholar
• Selva, N., and Fortuna, M. A. (2007). The nested structure of a scavenger community. Proceedings of the Royal Society of London. Series B. Biological Sciences 274, 1101–1108. doi: 10.1098/rspb.2006.0232
   PubMed Web of Science ®Google Scholar
• Stachowicz, J. J. (2001). Mutualism, facilitation, and the structure of ecological communities. Bioscience 51, 235–246. doi: 10.1641/0006-3568(2001)051[0235:MFATSO]2.0.CO;2
   Web of Science ®Google Scholar
• Stahler, D., Heinrich, B., and Smith, D. (2002). Common ravens, Corvus corax, preferentially associate with grey wolves, Canis lupus, as a foraging strategy in winter. Animal Behaviour 64, 283–290. doi: 10.1006/anbe.2002.3047
   Web of Science ®Google Scholar
• Stutz, S. (2001). Vegetación del área de la Laguna Mar Chiquita. In ‘Reserva de Biosfera Mar Chiquita: Características Físicas, Biológicas y Ecológicas’. (Ed. O. Iribarne.) pp. 287–302. (Editorial Martin: Mar del Plata, Argentina.)
   Google Scholar
• Thiollay, J. M. (1994). Family Accipitridae (Hawks and Eagles). In ‘Handbook of the Birds of the World. Vol. 2: New World Vultures to Guineafowl’. (Eds J. del Hoyo, A. Elliot and J. Sargatal.) pp. 52–205. (Lynx Edicions: Barcelona.)
   Google Scholar
• Travaini, A., Donázar, J.A., Rodríguez, A., Ceballos, O., Funes, M., Delibes, M., and Hiraldo, F. (1998). Use of European hare (Lepus europaeus) carcasses by an avian scavenging assemblage in Patagonia. Journal of Zoology 246, 175–181. doi: 10.1111/j.1469-7998.1998.tb00146.x
   Web of Science ®Google Scholar
• White, C. M., Olsen, P. D., and Cliff, L. F. (1994). Family Falconidae (Falcons and Caracaras). ‘Handbook of the birds of the world. Vol. 2: New World Vultures to Guineafowl’. (Eds J. del Hoyo, A. Elliot and J. Sargatal.) pp. 216–275. (Lynx Editions: Barcelona.)
   Google Scholar
• Wilmers, C. C., Crabtree, R. L., Smith, D. W., Murphy, K. M., and Getz, W. M. (2003). Trophic facilitation by introduced top predators: grey wolf subsidies to scavengers in Yellowstone National Park. Journal of Animal Ecology 72, 909–916. doi: 10.1046/j.1365-2656.2003.00766.x
   Web of Science ®Google Scholar