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Barbara Helm

Showing results (31-40 of 84) with videos related to

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Journal of Ornithology|November 1, 2021
Moult of overwintering Wood Warblers <i>Phylloscopus sibilatrix</i> in an annual-cycle perspectiveCrinan Jarrett, Luke L Powell, Tabe T Regine Claire, et al.
Proceedings. Biological Sciences|June 21, 2013
When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birdsSilke S Steiger, Mihai Valcu, Kamiel Spoelstra, et al.
The Journal of Experimental Biology|April 22, 2020
Body surface temperature responses to food restriction in wild and captive great titsLucy A Winder, Stewart A White, Andreas Nord, et al.
General and Comparative Endocrinology|October 8, 2019
Melatonin and corticosterone profiles under polar day in a seabird with sexually opposite activity-rhythmsNicholas Per Huffeldt, Flemming R Merkel, Susanne Jenni-Eiermann, et al.
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences|September 8, 2010
Phenology, seasonal timing and circannual rhythms: towards a unified frameworkMarcel E Visser, Samuel P Caro, Kees van Oers, et al.
Proceedings. Biological Sciences|May 4, 2022
Clock-linked genes underlie seasonal migratory timing in a diurnal raptorChristen M Bossu, Julie A Heath, Gregory S Kaltenecker, et al.
Progress in Brain Research|August 11, 2012
Avian migration: temporal multitasking and a case study of melatonin cycles in wadersBarbara Helm, Eberhard Gwinner, Anita Koolhaas, et al.
Molecular Phylogenetics and Evolution|June 24, 2008
Phylogenetic relationships, biogeography and speciation in the avian genus SaxicolaJuan Carlos Illera, David S Richardson, Barbara Helm, et al.
BMC Evolutionary Biology|May 24, 2017
Baseline and stress-induced levels of corticosterone in male and female Afrotropical and European temperate stonechats during breedingBeate Apfelbeck, Barbara Helm, Juan Carlos Illera, et al.
Proceedings. Biological Sciences|January 15, 2026
Temporal and environmental drivers of pre-migratory fuel loads in songbirds in West AfricaCrinan Jarrett, Barbara Helm, Yann Rime, et al.
Pageof 9

Showing results (31-40 of 84) with videos related to

Sort By:
Pageof 9
Journal of Ornithology|November 1, 2021
Moult of overwintering Wood Warblers <i>Phylloscopus sibilatrix</i> in an annual-cycle perspectiveCrinan Jarrett, Luke L Powell, Tabe T Regine Claire, et al.
Proceedings. Biological Sciences|June 21, 2013
When the sun never sets: diverse activity rhythms under continuous daylight in free-living arctic-breeding birdsSilke S Steiger, Mihai Valcu, Kamiel Spoelstra, et al.
The Journal of Experimental Biology|April 22, 2020
Body surface temperature responses to food restriction in wild and captive great titsLucy A Winder, Stewart A White, Andreas Nord, et al.
General and Comparative Endocrinology|October 8, 2019
Melatonin and corticosterone profiles under polar day in a seabird with sexually opposite activity-rhythmsNicholas Per Huffeldt, Flemming R Merkel, Susanne Jenni-Eiermann, et al.
Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences|September 8, 2010
Phenology, seasonal timing and circannual rhythms: towards a unified frameworkMarcel E Visser, Samuel P Caro, Kees van Oers, et al.
Proceedings. Biological Sciences|May 4, 2022
Clock-linked genes underlie seasonal migratory timing in a diurnal raptorChristen M Bossu, Julie A Heath, Gregory S Kaltenecker, et al.
Progress in Brain Research|August 11, 2012
Avian migration: temporal multitasking and a case study of melatonin cycles in wadersBarbara Helm, Eberhard Gwinner, Anita Koolhaas, et al.
Molecular Phylogenetics and Evolution|June 24, 2008
Phylogenetic relationships, biogeography and speciation in the avian genus SaxicolaJuan Carlos Illera, David S Richardson, Barbara Helm, et al.
BMC Evolutionary Biology|May 24, 2017
Baseline and stress-induced levels of corticosterone in male and female Afrotropical and European temperate stonechats during breedingBeate Apfelbeck, Barbara Helm, Juan Carlos Illera, et al.
Proceedings. Biological Sciences|January 15, 2026
Temporal and environmental drivers of pre-migratory fuel loads in songbirds in West AfricaCrinan Jarrett, Barbara Helm, Yann Rime, et al.
Pageof 9