Post-Release Stratification in Band-Recovery Models

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Abstract
Brownie et al. (Statistical Inference from Band-Recovery Data-A Handbook, 2nd edition, Washington, D.C.:Fish and Wildlife Service, U. S. Department of the Interior, 1985) present methodology for the analysis of band-recovery data when all animals are assumed to behave independently and all animals are homogeneous with respect to annual survival and band-recovery rates. We extend these results and investigate band-recovery models in cases where stratum assignment takes place after the banded animals are released, usually at recovery time, and each stratum may have different annual survival rates or band-recovery rates or both. Estimation under four possible models is examined. Tests to distinguish among models, the asymptotic power of the tests, and goodness-of-fit tests for each model are also developed. The methods are applied to band-recoveries of North American mallards by flyways.

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