Estimating Prefledging Survival: Allowing for Brood Mixing and Dependence among Brood Mates
Flint PL, Pollock KH, Thomas D, Sedinger JS. 1995. Estimating Prefledging Survival: Allowing for Brood Mixing and Dependence among Brood Mates. The Journal of Wildlife Management. 59(3):448-455
Estimates of juvenile survival from hatch to fledging provide important information on waterfowl productivity. We develop a model for estimating survival of young waterfowl from hatch to fledging. Our model enables interchange of individuals among broods and relaxes the assumption that individuals within broods have independent survival probabilities. The model requires repeated observations of individually identifiable adults and their offspring that are not individually identifiable. A modified Kaplan-Meier procedure (Pollock et al. 1989a,b) and a modified Mayfield procedure (Mayfield 1961, 1975; Johnson 1979) can be used under this general modeling framework, and survival rates and corresponding variances of the point estimators can be determined.
- Type
- Journal Article
- Authors
- Flint, Paul; Pollock, Kenneth; Thomas, Dana; Sedinger, James
- Units
- ARCN , BELA , CAKR , GAAR , KOVA , NOAT
- Keywords
- Arctic, Birds, Brant, brood mixing, estimating survival, Geese, gosling survival, Kaplan-Meier, Mayfield, Modeling, Mortality, Productivity, Waterfowl, Y-K Delta