Model selection for multi-event CMR models of probability of presence on Grand-Lieu (Ψ) and survival (Φ) of pochards ringed on Grand-Lieu (France).

Only four intermediate models and the selected one (in bold), among 37 tested, are presented. P = recapture probability (including physical recaptures and resightings). R = dead recovery probability. Abbreviations include: age (adult versus young), season (breeding versus wintering), s = site (Grand-Lieu versus Elsewhere), type (type 1 versus type 2), “*” means that the terms acts in interaction while “+” that they are additive, B = breeding season, W = wintering season and GL = Grand-Lieu. For example, sex(B GL) is a sex effect on Grand-Lieu during the breeding season only; age(type 2, B) is an age effect during the breeding season on individuals of type 2 only and type*site (B-W) indicates an interaction between site and type between the breeding and the wintering season. K = number of parameters in the model.