Seasonal variation in Eurasian Wigeon Anas penelope sex and age ratios from hunter-based surveys

@article{Clausen2013SeasonalVI,
  title={Seasonal variation in Eurasian Wigeon Anas penelope sex and age ratios from hunter-based surveys},
  author={Kevin K Clausen and Lars Dalby and Peter Sunde and Thomas Kj{\ae}r Christensen and Bjarke Egelund and Anthony D. Fox},
  journal={Journal of Ornithology},
  year={2013},
  volume={154},
  pages={769-774}
}
Demographic monitoring is vital for tracking and modelling the population dynamics of highly mobile bird populations. However, different types of monitoring can sometimes lead to different outcomes, and understanding the causes of equivocal results is an important step to advance future monitoring schemes. This study found consistent seasonal variation in Eurasian Wigeon Anas penelope sex and age ratios among Danish hunter-based wing surveys, and describes how accounting for this variation… CONTINUE READING
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