Survival rates of adult Reed Warblers Acrocephalus scirpaceus at a northern and southern site in England

Sedge Warbler (Acrocephalus schoenobaenus) Science Article 10


Mark-recapture ringing data from Wicken Fen in Cambridgeshire and Gosforth Park in Newcastle upon Tyne were used to estimate adult survival rates in a southerly and a northerly population of Reed Warblers in England. The computer program MARK was used to estimate survival and recapture rates, adjusted for transient birds, with respect to sexes at each site. Expressed as percentages, survival rates between 1988 and 2004 at the northerly Gosforth Park site were 60.3

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