by Gergely Schally, Sándor Csányi and Péter Palatitz
Abstract Eurasian Woodcock (Scolopax rusticola) plays a special role in the cultural heritage of most nations in Europe. In the last decade, ringing revealed the main migratory patterns of some well studied and intensively harvested Woodcock populations wintering in Western and Southern Europe. The same study sites and populations were…
by Sage A. Madden, Molly T. McDermott & Rebecca J. Safran
Abstract Life history theory predicts that increased investment in current offspring decreases future fecundity or survival. Avian parental investment decisions have been studied either via brood size manipulation or direct manipulation of parental energetic costs (also known as handicapping). However, we have limited experimental data on the potential interactive effects…
by Sarah. G. Neima, Rebeca, C. Linhart, Diana, J. Hamilton, Cheri, L. Gratto-Trevor and Julie Paquet.
Abstract The Bay of Fundy, Canada is a critical staging area for Semipalmated Sandpipers (Calidris pusilla) during post-breeding migration. Recent range-wide population declines and changes in diet and migratory timing in the Bay of Fundy prompted a re-examination of staging ecology, including length of stay (last estimated in 1981), which…
by Aaron A. Skinner, Michael P. Ward, Ian Souza-Cole, James R. Wright, Frank R. Thompson III, Thomas J. Benson, Stephen N. Matthews, Christopher M. Tonra
Abstract Aim A full annual cycle approach to conservation and understanding of regional population trends requires an understanding of migratory connectivity. We present tracking data on the eastern whip-poor-will (Antrostomus vociferus), a Neotropical migrant that has declined by 70% in recent decades. When and where populations of this species are…
by Allison Patterson, H. Grant Gilchrist, Anthony Gaston, Kyle H. Elliott
Abstract Climate change is altering the marine environment at a global scale, with some of the most dramatic changes occurring in Arctic regions. These changes may affect the distribution and migration patterns of marine species throughout the annual cycle. Species distribution models have provided detailed understanding of the responses of…
by Richard Evan Feldman, Antonio Celis-Murillo, Jill L. Deppe & Michael P. Ward
Abstract For migrating birds, stopover requires spending time and energy that otherwise could be allocated to flying. Thus, birds optimally refuel their subsequent migratory flight by reducing stopover duration or foraging activity in food-rich environments. In coastal habitats, birds may forego refueling and take short stopovers irrespective of local food…
by Joe Wynn, Tim Guilford, Oliver Padget, Chris M. Perrins, Neville McKee, Natasha Gillies, Chris Tyson, Ben Dean, Holly Kirk and Annette L. Fayet.
Abstract Although mechanisms of genetic and social inheritance have been implicated in determining the migratory routes of birds, it is unclear what their relative contributions are in species where outbound and return migration routes differ (‘loop migrants’). Here, we used biologging devices to follow Manx Shearwaters Puffinus puffinus, a long-lived…
by Armando J. B. Santos, Daniel H. G. Vieira, Claudio Bellini, Gilberto Corso, Simona A. Ceriani & Mariana M. P. B. Fuentes
Abstract Population abundance data are often used to define species’ conservation status. Abundance of marine turtles is typically estimated using nesting beach monitoring data such as nest counts and clutch frequency (CF, i.e., the number of nests female turtles lay within a nesting season). However, studies have shown that CF…
by Patrick Miller, Filipa Samarra, Paul Wensveen, Charlotte Curé, Lars Kleivane
Trial Outcome Overall, the pilot study trial was very successful, with excellent tagging outcomes success and tracking including four sound playbacks completed – all primary objectives achieved successfully. The facilities at U Iceland and team were outstanding. Everyone was well, no injuries or sickness. No major equipment was damaged or…
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