Data from: Genetic mark-recapture analysis of winter faecal pellets allows estimation of population size in sage grouse Centrocercus urophasianus

Sex ratio, and the extent to which it varies over time, is an important
factor in the demography, management, and conservation of wildlife
populations. We estimated pre-breeding sex ratio of greater sage-grouse
(Centrocercus urophasianus) in a peripheral, geographically isolated
population in northwestern Colorado during two consecutive winters using
closed-population, robust-design, multi-state, genetic mark-recapture
models in program MARK (White and Burnham 1999). This data release
includes the data files (.inp format) used in those models, as described
in Shyvers et al. 2023. The data include capture histories and auxiliary
data for individual greater sage-grouse collected during two study
seasons: Season 1 (winter 2012-2013) and Season 2 (winter 2013-2014) and
are readable using program MARK or notepad. Each data row includes the
unique bird identification number (GMR-ID); the bird’s encounter history
for n= sampling occasions coded as a static state (M = male, F = female);
the group ID; and a region covariate (0 = North, 1 = South). The data were
adapted from those originally developed for Shyvers et al.
2020 and applied using Closed Robust Design Multi-state (CRDMS)
Huggins' p and c w/state probabilities in program MARK to obtain
estimates of Omega, enabling estimation of sex ratio with associated
confidence intervals (see Shyvers et al. 2023). References: Shyvers, J.E.,
Walker, B.L., Oyler-McCance, S.J., Fike, J.A. and Noon, B.R. 2023. Genetic
mark-recapture analysis reveals large annual variation in pre-breeding sex
ratio of greater sage-grouse. Wildlife Biology
(https://doi.org/10.1002/wlb3.01085) Shyvers, J.E., Walker, B.L.,
Oyler‐McCance, S.J., Fike, J.A. and Noon, B.R., 2020. Genetic
mark-recapture analysis of winter faecal pellets allows
estimation of population size in Sage Grouse Centrocercus urophasianus.
Ibis, 162(3), pp.749-765. White, G. C., and K. P. Burnham. 1999. Program
Mark: survival estimation from populations of marked animals. – Bird Study
46:120–139.