entfällt, Sophie Lüdtke: Arlettaz R et al. (2015) Disturbance of wildlife by outdoor winter recreation: allostatic stress response and altered activity–energy budgets. Ecological Applications 25: 1197–1212, Thomas Marr: O‘Connor RS et al. (2017) Avian thermoregulation in the heat: efficient evaporative cooling in two southern African nighjars. J Comp Physiol b 187: 477-491, Deike Stoffers: Boelman NT et al. (2017) Extreme spring conditions in the Arctic delay spring phenology of long-distance migratory songbirds. Oecologia 185: 69-80, ## Weinacht: Owen JC et al. (2014) Elevated testosterone advances onset of migratory restlessness in a nearctic-neotropical landbird. Behav Ecol Sociobiol 68: 561–569., Jessica Schmidt: Fleissner G et al. (2003) Ultrastructural Analysis of a Putative Magnetoreceptor in the Beak of Homing Pigeons. The role of iron-rich cells in pigeons – a magnetic sense? J Comparative Neurology 458:350–360, Elmar Hackmann: Alerstam T et al. (2011) Convergent patterns of long-distance nocturnal migration in noctuid moths and passerine birds. Proc. R. Soc. B, doi:10.1098/rspb.2011.0058, Anna Kersten: Rotics S et al. (2018) Early arrival at breeding grounds: Causes, costs and a trade-off wit hoverwintering latutide. J Anim Ecol 87: 1627-1638, Jannik Schnier: Perkins A et al. (2018) Combined bottom-up and top-down pressures drive catastrophic population declines of Arctic skuas in Scotland. J Animal Ecology 87:1573-1586, Melanie Klock: Chmura HE et al. (2006) Late-season snowfall is associated with decreased offspring survival in two migratory arctic-breeding songbird species. J Avian Biology 49: e01712, Joachim Schwane: Hegemann A et al. (2018) A mimicked bacterial infection prolongs stopover duration in songbirds. J Animal Ecology 87: 1696-1708, David Himstedt: Germain M et al. (2017) Natal dispersers pay a lifetime cost to increased reproductive effort in a wild. Proc. R. Soc. B 284: 20162445. http://dx.doi.org/10.1098/rspb.2016.2445, Sandra Neißkenwirth: Fayet AL et al. (2016) Carry-over effects on the annual cycle of a migratory seabird: an experimental study. J Animal Ecology 85: 1516-1527, Carolin Walter: Noguera JC et al. (2017) Family-transmitted stress in a wild bird. PNAS, DOI: 10.1073/pnas.1706164114, Veronika Deikun: Halfwerk W et al. (2015) Low-frequency songs lose their potency in noisy urban conditions. PNAS doi/10.1073/pnas.1109091108, Lenard Stock: Martin GR (2009) What is binocular vision for? A birds’ eye view. Journal of Vision 9: 14, 1–19