Publications of Barbara Helm

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)

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)

Helm, B.; Schwabl, I.; Gwinner, E.: Circannual basis of geographically distinct bird schedules. The Journal of Experimental Biology 212 (9), pp. 1259 - 1269 (2009)

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)

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)

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)

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)

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)

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)

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)

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)

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)

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)

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)

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)

Helm, B.: Zugunruhe of migratory and non-migratory birds in a circannual context. Journal of Avian Biology 37 (6), pp. 533 - 540 (2006)

Helm, B.: Jahreszeitliches Verhalten in verschiedenen Lebensraumen: Vergleichende Studien an Schwarzkehlchen. Vogelwarte - Zeitschrift für Vogelkunde 44 (1), pp. 26 - 27 (2006)

Helm, B.; Fiedler, W.; Callion, J.: Movements of European Stonechats Saxicola torquata according to ringing recoveries. Ardea 94 (1), pp. 33 - 44 (2006)

Helm, B.; Gwinner, E.: Migratory restlessness in an equatorial nonmigratory bird. PLoS Biology 4 (4), pp. 611 - 614 (2006)

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)