The Estimation of Survival in Bird Populations By Recaptures or Sightings of Marked Individuals
To estimate bird survival rates, the shortcomings of methods based on recoveries (of dead birds) make it logical to use recapture information (of live birds) in specific statistical models. In this paper, the basic model of Cormack (1964) and some recent developments allowing equality constraints between parameters are reviewed. Applications to Fulmar, Starling, and Coot data are presented, with the emphasis on model selection. For Swallow data, these models designed to estimate survival are compared to more general recapture models. In conclusion, using the Cormack model and its generalisations in the course of population studies on a local scale is recommended.
KeywordsCapture-Recapture Survival Birds Maximum Likelihood
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