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Can a 'wintering area effect' explain population status of Swainson's hawks? A stable isotope approach
(Wiley Blackwell Publishing, Inc, 2008-07)
It has been suggested that declines in breeding populations of Swainson's hawks (Buteo swainsoni) in California, Oregon, and Nevada may be due to differential mortality of hawks on their wintering grounds. Although massive ...
Reduced MHC and neutral variation in the Galpagos hawk, an island endemic
(BioMed Central, 2011-05)
Background: Genes at the major histocompatibility complex (MHC) are known for high levels of polymorphism maintained by balancing selection. In small or bottlenecked populations, however, genetic drift may be strong enough ...
Abundance, movement and habitat use of Swainson's hawks in their wintering grounds, Argentina
(University of Florida, 2000)
Knowledge of habitat use by a particular species is necessary in developing species conservation plans. Large-scale mortality of Swainson’s hawks (Buteo swainsoni) in Argentina during austral summer 1995-96 identified the ...
Where do Swainson's hawks winter? Satellite images used to identify potential habitat
(Wiley Blackwell Publishing, Inc, 2008-09)
During recent years, predictive modelling techniques have been increasingly used to identify regional patterns of species spatial occurrence, to explore species-habitat relationships and to aid in biodiversity conservation. ...
Health of an ex situ population of raptors (Falconiformes and Strigiformes) in Mexico: diagnosis of internal parasites
(Universidad de Costa Rica, 2011)
Diurnal bird raptors of Llanos de Moxos, BoliviaAves de rapina diurnas em Llanos de Moxos, Bolívia
(Universidade do Vale do Rio dos Sinos, 2018-06)
Raptor abundance has been poorly documented in the Neotropics. Here we describe the abundance and composition of the diurnal bird raptor community of Llanos de Moxos, one of the largest and less studied Neotropical savannah. ...
Exposure of raptors in central Argentina to St. Louis encephalitis and West Nile viruses
(Raptor Research Foundation, 2020-10-02)
Arthropod-borne viruses are the most important emerging viruses worldwide. Saint Louis encephalitis (SLEV) and West Nile (WNV) viruses are vectored by Culex mosquitoes and amplified by several bird species. We carried out ...
Avifauna del Parque Nacional Pre-Delta, Entre Ríos, Argentina
(Neotrophical Bird Club, 2008-12)
Between February 2005 and November 2006, we made systematic surveys of birds in the Pre-Delta National Park, Entre Ríos, north-east Argentina, as part of a study designed to provide basic data for future use in the ...
External parasites of raptors (Falconiformes and Strigiformes): identification in an ex situ population from Mexico
(Universidad Nacional, Costa Rica., 2011)
Raptorial birds harbor a variety of ectoparasites and the mayority of them are host specific. The aim
of this study was to identify the ectoparasites of captive birds of prey from Mexico, as well as to verify their ...