Journal of Ornithology

, Volume 146, Issue 2, pp 184–187 | Cite as

A test of the wintering strategy hypothesis with teal (Anas crecca) ringed in the Camargue, southern France.

  • Matthieu Guillemain
  • Olivier Dehorter
  • Alan R. Johnson
  • Géraldine Simon
Original Article


Body mass changes in wintering ducks have been considered as the consequence of their “wintering strategy”, i.e. low mass after autumn migration, active foraging leading to body mass restoration, then pairing leading to low body mass again. This pattern is supported by weights of hunter-killed birds, but this is not enough to rule out potential alternative hypotheses linked to the existence of different populations with different body masses. The use of data collected at ringing and subsequent recaptures of known birds demonstrates that teal (Anas crecca) gain and lose body mass from September to March.


Anas crecca Body mass Camargue Teal Wintering strategy 



We would like to thank Matthias Kestenholz for useful comments on an earlier version of this manuscript, as well as Luc Hoffmann, Hubert Kowalski, Heinz Hafner and the other people who ringed the teal at the Tour du Valat over 25 years. We are most grateful to Marc Lutz and Paul Isenmann for their help while computerizing the teal database.


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Copyright information

© Dt. Ornithologen-Gesellschaft e.V. 2005

Authors and Affiliations

  • Matthieu Guillemain
    • 1
  • Olivier Dehorter
    • 2
  • Alan R. Johnson
    • 3
  • Géraldine Simon
    • 3
  1. 1.CNERA Avifaune MigratriceOffice National de la Chasse et de la Faune SauvageArlesFrance
  2. 2.Centre de Recherches sur la Biologie des Populations d’OiseauxMuséum National d’Histoire NaturelleParisFrance
  3. 3.Station Biologique de la Tour du ValatArlesFrance

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