Use of microsatellite-based paternity assignment to establish where Corn Crake Crex crex chicks are at risk from mechanized mowing

Rhys E. Green, Patricia Brekke, Hannah Ward, Matt Slaymaker, Marco van der Velde, Jan Komdeur, Hannah L. Dugdale

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Abstract

We used microsatellite DNA to assign probable parentage of young Corn Crakes to adult males and females and used these assignments to estimate the distribution of distances between broods of chicks and juveniles and the night-time singing place of the father at the time of initiation of the clutch. Estimated distances for broods of young chicks were in accord with those estimated previously by radiotracking, but distances were greater for older unfledged independent chicks not studied previously. Our results indicate that modifications of the timing and method of mowing to reduce losses of nests and chicks should be implemented inside an area within about 500 m of the singing places of male Corn Crakes, rather than the 250 m previously considered to be safe.
Original languageEnglish
Pages (from-to)890-894
Number of pages5
JournalIbis
Volume161
Issue number4
Early online date4-Mar-2019
DOIs
Publication statusPublished - Oct-2019

Keywords

  • age-related movement change
  • agri-environment
  • conservation management
  • ranging behaviour

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