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Article
Rebecca A. McCabe, Auteur ; Laurie J. Goodrich, Auteur ; David R. Barber, Auteur ; Terry L. Master, Auteur ; Jesse L. Watson, Auteur ; Erin M. Bayne, Auteur ; Autumn-Lynn Harrison, Auteur ; Peter P. Marra, Auteur ; Keith L. Bildstein, Auteur
Article
Chloe Bracis, Auteur ; Keith L. Bildstein, Auteur ; Thomas Mueller, AuteurAnimals regularly return to locations such as foraging patches, nests, dens, watering holes, or movement corridors, and these revisited locations are often sites of ecological significance. Analyzing the temporal and spatial pattern of revisitat[...]
Article
Jennifer C. Probst, Auteur ; Jean-François Therrien, Auteur ; Laurie J. Goodrich, Auteur ; Keith L. Bildstein, AuteurABSTRACT Global change can affect several aspects of bird biology, including population size and migration timing. We used count data collected during 25 years (1990?2014) at Hawk Mountain Sanctuary, a raptor migration watch-site in eastern Penn[...]
Article
Todd E. Katzner, Auteur ; Evgeny A. Bragin, Auteur ; Alexander E. Bragin, Auteur ; Michael McGrady, Auteur ; Tricia A. Miller, Auteur ; Keith L. Bildstein, AuteurCapsule: Red-footed Falcons Falco vespertinus migrating from northern Kazakhstan proceed west before heading south to Africa; their northbound travel follows a different route with passage close to shooting hotspots in the Mediterranean.Aim: To [...]
Article
Alexander Gavashelishvili, Auteur ; Michael McGrady, Auteur ; Mamikon Ghasabian, Auteur ; Keith L. Bildstein, AuteurCapsule Juvenile and immature Cinereous Vultures from the Caucasus move large distances across undeveloped open-dry habitats in response to snowfall or high summer temperatures. Aim To study local and long-range movements of Cinereous Vulture (A[...]
Article
C. Stuart Houston, Auteur ; Philip D. McLoughlin, Auteur ; James T. Mandel, Auteur ; Marc J. Bechard, Auteur ; Marten J. Stoffel, Auteur ; David R. Barber, Auteur ; Keith L. Bildstein, Auteur
Article
Wouter M. G. Vansteelant, Auteur ; Brecht Verhelst, Auteur ; Judy Shamoun-Baranes, Auteur ; Willem Bouten, Auteur ; E. Emiel van Loon, Auteur ; Keith L. Bildstein, AuteurEvery autumn, large numbers of raptors migrate through geographical convergence zones to avoid crossing large bodies of water. At coastal convergence zones, raptors may aggregate along coastlines because of convective or wind conditions. However[...]
Article
Keith L. Bildstein, Auteur ; Marc J. Bechard, Auteur ; Christopher Farmer, Auteur ; Laura Newcomb, AuteurThe flight behaviour of Griffon Vultures Gyps fulvus was studied at a major migration bottleneck, the Strait of Gibraltar in southernmost Spain, during the autumns of 2004 to 2007. The 14-km-wide sea channel significantly impeded the southern mi[...]
Article
Lindy J. Thompson, Auteur ; John P. Davies, Auteur ; Keith L. Bildstein, Auteur ; Colleen T. Downs, AuteurRelatively little is documented about nest material theft in vultures. We used camera traps to monitor Hooded Vulture Necrosyrtes monachus nests for a year. We report camera trap photographs of a starling Lamprotornis sp. removing what appeared [...]
Article
Daniel M. Hinnebusch, Auteur ; Jean-François Therrien, Auteur ; Marc-André Valiquette, Auteur ; Bob Robertson, Auteur ; Sue Robertson, Auteur ; Keith L. Bildstein, Auteur
Article
Lindy J. Thompson, Auteur ; John P. Davies, Auteur ; Maja Gudehus, Auteur ; André J. Botha, Auteur ; Keith L. Bildstein, Auteur ; Campbell Murn, Auteur ; Colleen T. Downs, AuteurHooded Vultures Necrosyrtes monachus are critically endangered but little is known of their year-round use of nests or whether other species usurp Hooded Vulture nest sites. We investigated visitation rates by Hooded Vultures and other species ([...]
Article
Lindy J. Thompson, Auteur ; John P. Davies, Auteur ; Maja Gudehus, Auteur ; André J. Botha, Auteur ; Keith L. Bildstein, Auteur ; Campbell Murn, Auteur ; Colleen T. Downs, AuteurHooded Vultures Necrosyrtes monachus are critically endangered but little is known of their year-round use of nests or whether other species usurp Hooded Vulture nest sites. We investigated visitation rates by Hooded Vultures and other species ([...]
Article
Maricel Graña Grilli, Auteur ; Sergio A. Lambertucci, Auteur ; Jean-François Therrien, Auteur ; Keith L. Bildstein, AuteurBoth wing size and wing shape affect the flight abilities of birds. Intra and inter-specific studies have revealed a pattern where high aspect ratio and low wing loading favour migratory behaviour. This, however, have not been studied in soaring[...]
