RAS: Renewing Acquaintances in Spring - horlayeencar11

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Monday, May 16, 2016

RAS: Renewing Acquaintances in Spring


For almost 20 years, the Retrapping Adults for Survival (RAS) scheme has used standardised bird ringing as a tool to monitor adult survival rates of species not frequently caught at Constant Effort Sites. The results are used to generate annual survival estimates which help us to understand more about the contribution changes in the probability of mortality make to population trends recorded by

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