
Publications of Barbara Helm
All genres
Journal Article (50)
1.
Journal Article
29 (21), pp. 3714 - 3719.e4 (2019)
Evolutionary response to climate change in migratory pied flycatchers. Current Biology 2.
Journal Article
540 (7631), pp. 109 - 113 (2016)
Unexpected diversity in socially synchronized rhythms of shorebirds. Nature 3.
Journal Article
47 (3), pp. 417 - 427 (2016)
Evaluation of two methods for minimally invasive peripheral body temperature measurement in birds. Journal of Avian Biology 4.
Journal Article
282 (1817), 20151453 (2015)
Disrupted seasonal biology impacts health, food security and ecosystems. Proceedings of the Royal Society B: Biological Sciences 5.
Journal Article
11, 85 (2014)
Behavioural response of a migratory songbird to geographic variation of song and morphology. Frontiers in Zoology 6.
Journal Article
217 (9), pp. 1510 - 1518 (2014)
Genetic and phenotypically flexible components of seasonal variation in immune function. The Journal of Experimental Biology 7.
Journal Article
10, 60 (2013)
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 8.
Journal Article
280 (1763), 20130593 (2013)
Clocks for the city: Circadian differences between forest and city songbirds. Proceedings of the Royal Society B: Biological Sciences 9.
Journal Article
280 (1765), 20130016 (2013)
Annual rhythms that underlie phenology: Biological time-keeping meets environmental change. Proceedings of the Royal Society B: Biological Sciences 10.
Journal Article
10 (81), 20121047 (2013)
A strong magnetic pulse affects the precision of departure direction of naturally migrating adult but not juvenile birds. Interface: Journal of the Royal Society 11.
Journal Article
280 (1764), 20131016 (2013)
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 12.
Journal Article
279 (1742), pp. 3527 - 3534 (2012)
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 13.
Journal Article
29 (8), pp. 1062 - 1071 (2012)
Effects of temperature on circadian clock and chronotype: An experimental study on a passerine bird. Chronobiology International 14.
Journal Article
153 (Suppl. 1), pp. 181 - 191 (2012)
Physiological and behavioral responses of migrants to environmental cues. Journal of Ornithology 15.
Journal Article
215 (19), pp. 3459 - 3466 (2012)
Annual cycles of metabolic rate are genetically determined but can be shifted by phenotypic flexibility. The Journal of Experimental Biology 16.
Journal Article
23 (5), pp. 1050 - 1063 (2010)
Wing pointedness associated with migratory distance in common-garden and comparative studies of stonechats (Saxicola torquata). Journal of Evolutionary Biology 17.
Journal Article
277 (1698), pp. 3335 - 3342 (2010)
Heritable circadian period length in a wild bird population. Proceedings of the Royal Society B: Biological Sciences 18.
Journal Article
156 (4), pp. 537 - 540 (2010)
Repeatability and individual correlates of microbicidal capacity of bird blood. Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology 19.
Journal Article
365 (1555), pp. 3113 - 3127 (2010)
Phenology, seasonal timing and circannual rhythms: Towards a unified framework. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences 20.
Journal Article
47 (2), pp. 125 - 133 (2009)
Auswirkung von Spätbruten auf Mauser und Rückkehrrate bei einem Weitstreckenzieher, dem Steinschmätzer (Oenanthe oenanthe). Vogelwarte - Zeitschrift für Vogelkunde 21.
Journal Article
49 (5), pp. 563 - 579 (2009)
Geographically distinct reproductive schedules in a changing world: Costly implications in captive Stonechats. Integrative and Comparative Biology 22.
Journal Article
212 (9), pp. 1259 - 1269 (2009)
Circannual basis of geographically distinct bird schedules. The Journal of Experimental Biology 23.
Journal Article
4 (7), e6170 (2009)
Migratory status is not related to the susceptibility to HPAIV H5N1 in an insectivorous passerine species. PLoS One 24.
Journal Article
24 (3), pp. 225 - 231 (2009)
Under cover of darkness: Nocturnal life of diurnal birds. Journal of Biological Rhythms 25.
Journal Article
56 (1), pp. 163 - 168 (2009)
Persistent diel melatonin rhythmicity during the Arctic summer in free-living willow warblers. Hormones and Behavior 26.
Journal Article
276 (1662), pp. 1685 - 1693 (2009)
Genetic modulation of energy metabolism in birds through mitochondrial function. Proceedings of the Royal Society B: Biological Sciences 27.
Journal Article
279 (2), pp. 129 - 136 (2009)
Quantitative genetics parameters show partial independent evolutionary potential for body mass and metabolism in stonechats from different populations. Journal of Zoology 28.
Journal Article
150 (4), pp. 687 - 697 (2008)
Plasticity of moult and breeding schedules in migratory European Stonechats Saxicola rubicola. Ibis 29.
Journal Article
48 (3), pp. 1145 - 1154 (2008)
Phylogenetic relationships, biogeography and speciation in the avian genus Saxicola. Molecular Phylogenetics and Evolution 30.
Journal Article
136, pp. 14 - 17 (2008)
En busca de los origenes de las tarabillas del mundo. La Garcilla 31.
Journal Article
150 (4), pp. 452 - 457 (2008)
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 32.
Journal Article
363 (1490), pp. 411 - 423 (2008)
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 33.
Journal Article
149 (3), pp. 423 - 430 (2008)
Distinct taxonomic position of the Madagascar stonechat (Saxicola torquatus sibilla) revealed by nucleotide sequences of mitochondrial DNA. Journal of Ornithology 34.
Journal Article
35 (1-2), pp. 79 - 91 (2007)
Migration speed and scheduling of annual events by migrating birds in relation to climate change. Climate Research 35.
Journal Article
94 (8), pp. 693 - 696 (2007)
Daytime light intensity affects seasonal timing via changes in the nocturnal melatonin levels. Die Naturwissenschaften 36.
Journal Article
37 (6), pp. 533 - 540 (2006)
Zugunruhe of migratory and non-migratory birds in a circannual context. Journal of Avian Biology 37.
Journal Article
44 (1), pp. 26 - 27 (2006)
Jahreszeitliches Verhalten in verschiedenen Lebensraumen: Vergleichende Studien an Schwarzkehlchen. Vogelwarte - Zeitschrift für Vogelkunde 38.
Journal Article
94 (1), pp. 33 - 44 (2006)
Movements of European Stonechats Saxicola torquata according to ringing recoveries. Ardea 39.
Journal Article
4 (4), pp. 611 - 614 (2006)
Migratory restlessness in an equatorial nonmigratory bird. PLoS Biology 40.
Journal Article
72 (2), pp. 245 - 262 (2006)
Sociable schedules: Interplay between avian seasonal and social behaviour. Animal Behaviour 41.
Journal Article
147 (2), pp. 221 - 233 (2006)
A framework for the study of genetic variation in migratory behaviour. Journal of Ornithology 42.
Journal Article
146 (4), pp. 348 - 354 (2005)
Carry-over effects of day length during spring migration. Journal of Ornithology 43.
Journal Article
1046, pp. 216 - 227 (2005)
Flexible seasonal timing and migratory behavior: Results from stonechat breeding programs. Annals of the New York Academy of Sciences 44.
Journal Article
27, pp. 64 - 84 (2004)
Combatting misogyny? Responses to Nietzsche by Turn-of-the-Century German Women. Journal of Nietzsche Studies 45.
Journal Article
91, pp. 135 - 139 (2003)
Coping with extreme conditions: Are desert birds different? Ardea 46.
Journal Article
34 (1), pp. 124 - 128 (2003)
An integrative framework for understanding the origin and evolution of avian migration. Journal of Avian Biology 47.
Journal Article
24, pp. 579 - 594 (2002)
Programmed patterns of territorial aggression in first-year European and African Stonechats (Saxicola torquata rubicola and S. t. axillaris). Ökologie der Vögel 48.
Journal Article
1 (1), pp. 31 - 42 (2001)
Nestling growth and post-juvenile molt under tight seasonal schedule: Stonechats from Kazakhstan, Saxicola torquata maura. Avian Science 49.
Journal Article
60 (6), pp. 899 - 902 (2000)
Human handedness causes directional asymmetry in avian wing length measurements. Animal Behaviour 50.
Journal Article
116 (3), pp. 589 - 603 (1999)
Timing of postjuvenal molt in African (Saxicola torquata axillaris) and European (Saxicola torquata rubicola) Stonechats: Effects of genetic and environmental factors. The Auk