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Journal of Ornithology

, Volume 160, Issue 4, pp 1077–1085 | Cite as

Stable isotopes reveal the common winter moult of central rectrices in a long-distance migrant songbird

  • Frédéric JiguetEmail author
  • Kevin J. Kardynal
  • Markus Piha
  • Tuomas Seimola
  • José Luis Copete
  • Michel Alexandre Czajkowski
  • Valery Dombrovski
  • Ron Efrat
  • Simonas Minkevicius
  • Marko Raković
  • Michał Skierczyǹski
  • Keith A. Hobson
Original Article

Abstract

By analysing the deuterium concentration in the scapulars and rectrices (δ2Hf) of breeding and spring migrating Ortolan Buntings (Emberiza hortulana), we found a high correlation attesting that spring body and central rectrices have grown in similar isotopic environments. Furthermore, we failed to find a correlation between δ2Hf of the rectrices and the amount-weighted growing season precipitation δ2Hp of sites where we captured the birds. Winter-grown body coverts and rectrices displayed similar probabilistic assignments to origin. Further examination of 76 tails of breeding birds captured in Finland in May–June confirmed that breeding birds wear recently moulted central rectrices. The body coverts are known to moult during the winter partial moult in that species, but the rectrices have been reported to moult only once a year, during the complete post-breeding moult occurring on the breeding grounds in summer. Here, we reveal the common replacement of the central pair in winter, as well. The winter tail moult could occur beyond the central pair in some individuals, but this has still to be confirmed or refuted, by, e.g., further isotopic investigations.

Keywords

Deuterium Emberiza hortulana Moulting strategy Ortolan Bunting Tail feather 

Zusammenfassung

Stabile Isotope belegen eine verbreitete Wintermauser der mittleren Steuerfedern bei einem langstreckenziehenden Singvogel

Bei der Analyse der Deuteriumkonzentration (δ2Hf) in den Schulter- und Steuerfedern von Ortolanen Emberiza hortulana zur Brutzeit und auf dem Frühjahrszug fanden wir eine starke Korrelation, welche belegt, dass die im Frühling getragenen Körper- und mittleren Steuerfedern in isotopisch ähnlicher Umgebung gewachsen waren. Des Weiteren fanden wir keine Korrelation zwischen dem δ2Hf-Wert der Steuerfedern und dem nach Menge gewichteten δ2Hp-Wert des Niederschlags während der Wachstumsperiode an den Orten, an denen die Vögel gefangen wurden. Die im Winter vermauserten Körperdecken und Steuerfedern zeigten ähnliche Zuordnungen zu wahrscheinlichen Herkunftsgebieten. Die weitere Untersuchung von 76 Steuern von zwischen Mai-Juni in Finnland gefangenen Brutvögeln bestätigte, dass Brutvögel frisch vermauserte mittlere Steuerfedern trugen. Es ist bekannt, dass diese Vogelart das Körperdeckgefieder während der Winterteilmauser erneuert, allerdings hieß es, dass die Steuerfedern nur einmal jährlich, während der Sommerkomplettmauser im Brutgebiet, gemausert würden. Wir belegen hier, dass das mittlere Paar häufig auch im Winter vermausert wird. Bei manchen Individuen könnte die Steuerfedermauser außer dem mittleren auch weitere Federpaare umfassen; dies muss aber noch z. B. durch weitere Isotopenstudien bestätigt oder widerlegt werden.

Notes

Ackowledgements

We are grateful to all our colleagues who helped in the field work, monitoring and capturing of the buntings. We thank two anonymous reviewers who provided important insights to clarify the moult patterns of buntings. This research was funded by Conseil Général des Landes, Région Aquitaine, Région Nouvelle Aquitaine, Fédération Départementale des Chasseurs des Landes (FDC40), Association Départementale des Chasses Traditionnelles à la Matole (ADCTM), French Ministry in charge of the Environment. Environment and Climate Change Canada supported the stable isotope analyses through an operating grant to Keith Hobson. The Polish National Science Centre (NCN) partially promoted the research in Poland—MS was funded by Grant no. N N304 0198 40.

Supplementary material

10336_2019_1671_MOESM1_ESM.docx (118 kb)
Supplementary material 1 (DOCX 117 kb)

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Copyright information

© Deutsche Ornithologen-Gesellschaft e.V. 2019

Authors and Affiliations

  • Frédéric Jiguet
    • 1
    Email author
  • Kevin J. Kardynal
    • 2
  • Markus Piha
    • 3
  • Tuomas Seimola
    • 4
  • José Luis Copete
    • 5
  • Michel Alexandre Czajkowski
    • 6
  • Valery Dombrovski
    • 7
  • Ron Efrat
    • 8
  • Simonas Minkevicius
    • 9
  • Marko Raković
    • 10
  • Michał Skierczyǹski
    • 11
  • Keith A. Hobson
    • 2
    • 12
  1. 1.CESCO, UMR7204 MNHN-CNRS-Sorbonne UniversitéParisFrance
  2. 2.Environment and Climate Change CanadaSaskatoonCanada
  3. 3.Finnish Museum of Natural History LUOMUSUniversity of HelsinkiHelsinkiFinland
  4. 4.Natural Resources Institute Finland (Luke), Natural ResourcesHelsinkiFinland
  5. 5.Handbook of the Birds of the World Alive, Lynx EdicionsBellaterraSpain
  6. 6.OMPOParisFrance
  7. 7.Institute of Zoology, National Academy of SciencesMinskBelarus
  8. 8.Mitrani Department of Desert Ecology, The Jacob Blaustein Institute for Desert ResearchBen-Gurion University of the NegevMidreshet Ben-GurionIsrael
  9. 9.VilniusLithuania
  10. 10.Natural History Museum of BelgradeBelgradeSerbia
  11. 11.Department of Behavioural EcologyAdam Mickiewicz UniversityPoznanPoland
  12. 12.Dept. Biology and Environment and Climate Change CanadaUniversity of Western OntarioLondonCanada

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