Publications of the research group "Animal Communication and Urban Ecology"

Publications of Barbara Helm

Journal Article (50)

2019
Journal Article
Helm, B.; van Doren, B. M.; Hoffmann, D.; Hoffmann, U.: Evolutionary response to climate change in migratory pied flycatchers. Current Biology 29 (21), pp. 3714 - 3719.e4 (2019)
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2016
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Bulla, M.; Valcu, M.; Dokter, A. M.; Dondua, A. G.; Kosztolányi, A.; Rutten, A. L.; Helm, B.; Sandercock, B. K.; Casler, B.; Ens, B. J. et al.: Unexpected diversity in socially synchronized rhythms of shorebirds. Nature 540 (7631), pp. 109 - 113 (2016)
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Nord, A.; Lehmann, M.; MacLeod, R.; McCafferty, D. J.; Nager, R. G.; Nilsson, J.-Å.; Helm, B.: Evaluation of two methods for minimally invasive peripheral body temperature measurement in birds. Journal of Avian Biology 47 (3), pp. 417 - 427 (2016)
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2015
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Stevenson, T. J.; Visser, M. E.; Arnold, W.; Barrett, P.; Biello, S.; Dawson, A.; Denlinger, D. L.; Dominoni, D. M.; Ebling, F. J.; Elton, S. et al.: Disrupted seasonal biology impacts health, food security and ecosystems. Proceedings of the Royal Society B: Biological Sciences 282 (1817), 20151453 (2015)
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2014
Journal Article
Mortega, K. G.; Flinks, H.; Helm, B.: Behavioural response of a migratory songbird to geographic variation of song and morphology. Frontiers in Zoology 11, 85 (2014)
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Versteegh, M. A.; Helm, B.; Kleynhans, E. J.; Gwinner, E.; Tieleman, B. I.: Genetic and phenotypically flexible components of seasonal variation in immune function. The Journal of Experimental Biology 217 (9), pp. 1510 - 1518 (2014)
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2013
Journal Article
Dominoni, D. M.; Goymann, W.; Helm, B.; Partecke, J.: Urban-like night illumination reduces melatonin release in European blackbirds (Turdus merula): Implications of city life for biological time-keeping of songbirds. Frontiers in Zoology 10, 60 (2013)
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Dominoni, D. M.; Helm, B.; Lehmann, M.; Dowse, H. B.; Partecke, J.: Clocks for the city: Circadian differences between forest and city songbirds. Proceedings of the Royal Society B: Biological Sciences 280 (1763), 20130593 (2013)
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Helm, B.; Ben-Shlomo, R.; Sheriff, M. J.; Hut, R. A.; Foster, R.; Barnes, B. M.; Dominoni, D. M.: Annual rhythms that underlie phenology: Biological time-keeping meets environmental change. Proceedings of the Royal Society B: Biological Sciences 280 (1765), 20130016 (2013)
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Holland, R. A.; Helm, B.: A strong magnetic pulse affects the precision of departure direction of naturally migrating adult but not juvenile birds. Interface: Journal of the Royal Society 10 (81), 20121047 (2013)
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Steiger, S. S.; Valcu, M.; Spoelstra, K.; Helm, B.; Wikelski, M.; Kempenaers, B.: When the sun never sets: Diverse activity rhythms under continuous daylight in free-living arctic-breeding birds. Proceedings of the Royal Society B: Biological Sciences 280 (1764), 20131016 (2013)
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2012
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Goymann, W.; Helm, B.; Jensen, W.; Schwabl, I.; Moore, I. T.: A tropical bird can use the equatorial change in sunrise and sunset times to synchronize its circannual clock. Proceedings of the Royal Society B: Biological Sciences 279 (1742), pp. 3527 - 3534 (2012)
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Lehmann, M.; Spoelstra, K.; Visser, M. E.; Helm, B.: Effects of temperature on circadian clock and chronotype: An experimental study on a passerine bird. Chronobiology International 29 (8), pp. 1062 - 1071 (2012)
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Ramenofsky, M.; Cornelius, J. M.; Helm, B.: Physiological and behavioral responses of migrants to environmental cues. Journal of Ornithology 153 (Suppl. 1), pp. 181 - 191 (2012)
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Versteegh, M. A.; Helm, B.; Gwinner, E.; Tieleman, B. I.: Annual cycles of metabolic rate are genetically determined but can be shifted by phenotypic flexibility. The Journal of Experimental Biology 215 (19), pp. 3459 - 3466 (2012)
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2010
Journal Article
Baldwin, M. W.; Winkler, H.; Organ, C. L.; Helm, B.: Wing pointedness associated with migratory distance in common-garden and comparative studies of stonechats (Saxicola torquata). Journal of Evolutionary Biology 23 (5), pp. 1050 - 1063 (2010)
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Helm, B.; Visser, M. E.: Heritable circadian period length in a wild bird population. Proceedings of the Royal Society B: Biological Sciences 277 (1698), pp. 3335 - 3342 (2010)
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Tieleman, B. I.; Croese, E.; Helm, B.; Versteegh, M. A.: Repeatability and individual correlates of microbicidal capacity of bird blood. Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology 156 (4), pp. 537 - 540 (2010)
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Visser, M. E.; Caro, S. P.; van Oers, K.; Schaper, S. V.; Helm, B.: Phenology, seasonal timing and circannual rhythms: Towards a unified framework. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences 365 (1555), pp. 3113 - 3127 (2010)
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2009
Journal Article
Buchmann, M.; Helm, B.; Rothery, P.; Flinks, H.: Auswirkung von Spätbruten auf Mauser und Rückkehrrate bei einem Weitstreckenzieher, dem Steinschmätzer (Oenanthe oenanthe). Vogelwarte - Zeitschrift für Vogelkunde 47 (2), pp. 125 - 133 (2009)
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Helm, B.: Geographically distinct reproductive schedules in a changing world: Costly implications in captive Stonechats. Integrative and Comparative Biology 49 (5), pp. 563 - 579 (2009)
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Helm, B.; Schwabl, I.; Gwinner, E.: Circannual basis of geographically distinct bird schedules. The Journal of Experimental Biology 212 (9), pp. 1259 - 1269 (2009)
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Kalthoff, D.; Breithaupt, A.; Helm, B.; Teifke, J. P.; Beer, M.: Migratory status is not related to the susceptibility to HPAIV H5N1 in an insectivorous passerine species. PLoS One 4 (7), e6170 (2009)
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Mukhin, A.; Grinkevich, V.; Helm, B.: Under cover of darkness: Nocturnal life of diurnal birds. Journal of Biological Rhythms 24 (3), pp. 225 - 231 (2009)
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Silverin, B.; Gwinner, E.; Van't Hof, T. J.; Schwabl, I.; Fusani, L.; Hau, M.; Helm, B.: Persistent diel melatonin rhythmicity during the Arctic summer in free-living willow warblers. Hormones and Behavior 56 (1), pp. 163 - 168 (2009)
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Tieleman, B. I.; Versteegh, M. A.; Fries, A.; Helm, B.; Dingemanse, N. J.; Gibbs, H. L.; Williams, J. B.: Genetic modulation of energy metabolism in birds through mitochondrial function. Proceedings of the Royal Society B: Biological Sciences 276 (1662), pp. 1685 - 1693 (2009)
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Tieleman, B. I.; Versteegh, M. A.; Helm, B.; Dingemanse, N. J.: Quantitative genetics parameters show partial independent evolutionary potential for body mass and metabolism in stonechats from different populations. Journal of Zoology 279 (2), pp. 129 - 136 (2009)
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2008
Journal Article
Flinks, H.; Helm, B.; Rothery, P.: Plasticity of moult and breeding schedules in migratory European Stonechats Saxicola rubicola. Ibis 150 (4), pp. 687 - 697 (2008)
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Illera, J. C.; Richardson, D. S.; Helm, B.; Atienza, J. C.; Emerson, B. C.: Phylogenetic relationships, biogeography and speciation in the avian genus Saxicola. Molecular Phylogenetics and Evolution 48 (3), pp. 1145 - 1154 (2008)
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Illera, J.C.; Richardson, D. S.; Helm, B.; Atienza, J. C.; Emerson, B. C.: En busca de los origenes de las tarabillas del mundo. La Garcilla 136, pp. 14 - 17 (2008)
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Versteegh, M. A.; Helm, B.; Dingemanse, N. J.; Tieleman, B. I.: Repeatability and individual correlates of basal metabolic rate and total evaporative water loss in birds: A case study in European stonechats. Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology 150 (4), pp. 452 - 457 (2008)
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Wikelski, M.; Martin, L. B.; Scheuerlein, A.; Robinsoni, M. T.; Robinson, N. D.; Helm, B.; Hau, M.; Gwinner, E.: Avian circannual clocks: Adaptive significance and possible involvement of energy turnover in their proximate control. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences 363 (1490), pp. 411 - 423 (2008)
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Woog, F.; Wink, M.; Rastegar-Pouyani, E.; Gonzalez, J.; Helm, B.: Distinct taxonomic position of the Madagascar stonechat (Saxicola torquatus sibilla) revealed by nucleotide sequences of mitochondrial DNA. Journal of Ornithology 149 (3), pp. 423 - 430 (2008)
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2007
Journal Article
Hedenström, A.; Barta, Z.; Helm, B.; Houston, A. I.; McNamara, J. M.; Jonzen, N.: Migration speed and scheduling of annual events by migrating birds in relation to climate change. Climate Research 35 (1-2), pp. 79 - 91 (2007)
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Kumar, V.; Rani, S.; Malik, S.; Trivedi, A. K.; Schwabl, I.; Helm, B.; Gwinner, E.: Daytime light intensity affects seasonal timing via changes in the nocturnal melatonin levels. Die Naturwissenschaften 94 (8), pp. 693 - 696 (2007)
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2006
Journal Article
Helm, B.: Zugunruhe of migratory and non-migratory birds in a circannual context. Journal of Avian Biology 37 (6), pp. 533 - 540 (2006)
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Helm, B.: Jahreszeitliches Verhalten in verschiedenen Lebensraumen: Vergleichende Studien an Schwarzkehlchen. Vogelwarte - Zeitschrift für Vogelkunde 44 (1), pp. 26 - 27 (2006)
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Helm, B.; Fiedler, W.; Callion, J.: Movements of European Stonechats Saxicola torquata according to ringing recoveries. Ardea 94 (1), pp. 33 - 44 (2006)
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Helm, B.; Gwinner, E.: Migratory restlessness in an equatorial nonmigratory bird. PLoS Biology 4 (4), pp. 611 - 614 (2006)
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Helm, B.; Piersma, T.; Van der Jeugd, H.: Sociable schedules: Interplay between avian seasonal and social behaviour. Animal Behaviour 72 (2), pp. 245 - 262 (2006)
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Van Noordwijk, A. J.; Pulido, F.; Helm, B.; Coppack, T.; Delingat, J.; Dingle, H.; Hedenström, A.; van der Jeugd, H.; Marchetti, C.; Nilsson, A. et al.: A framework for the study of genetic variation in migratory behaviour. Journal of Ornithology 147 (2), pp. 221 - 233 (2006)
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2005
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Helm, B.; Gwinner, E.: Carry-over effects of day length during spring migration. Journal of Ornithology 146 (4), pp. 348 - 354 (2005)
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Journal Article
Helm, B.; Gwinner, E.; Trost, L.: Flexible seasonal timing and migratory behavior: Results from stonechat breeding programs. Annals of the New York Academy of Sciences 1046, pp. 216 - 227 (2005)
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2004
Journal Article
Helm, B.: Combatting misogyny? Responses to Nietzsche by Turn-of-the-Century German Women. Journal of Nietzsche Studies 27, pp. 64 - 84 (2004)
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2003
Journal Article
Helm, B.: Coping with extreme conditions: Are desert birds different? Ardea 91, pp. 135 - 139 (2003)
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Rappole, J. H.; Helm, B.; Ramos, M. A.: An integrative framework for understanding the origin and evolution of avian migration. Journal of Avian Biology 34 (1), pp. 124 - 128 (2003)
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2002
Journal Article
König, S.; Gwinner, E.; Helm, B.: Programmed patterns of territorial aggression in first-year European and African Stonechats (Saxicola torquata rubicola and S. t. axillaris). Ökologie der Vögel 24, pp. 579 - 594 (2002)
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2001
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Helm, B.; Gwinner, E.: Nestling growth and post-juvenile molt under tight seasonal schedule: Stonechats from Kazakhstan, Saxicola torquata maura. Avian Science 1 (1), pp. 31 - 42 (2001)
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2000
Journal Article
Helm, B.; Albrecht, H.: Human handedness causes directional asymmetry in avian wing length measurements. Animal Behaviour 60 (6), pp. 899 - 902 (2000)
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1999
Journal Article
Helm, B.; Gwinner, E.: Timing of postjuvenal molt in African (Saxicola torquata axillaris) and European (Saxicola torquata rubicola) Stonechats: Effects of genetic and environmental factors. The Auk 116 (3), pp. 589 - 603 (1999)
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