Fig 1.
Observed counts of Grey-crowned Babblers in sites surveyed in 1995 and 2008.
(a) sites without restoration works; (b) sites with restoration works. Counts of zero can represent true absence or failed detections. Symbol size and number within denote frequency of that group size within the sampling period, according to the design and, not wider occupancy rates. Lines connect the two observations in time at particular sites. Line widths reflect the frequency of that pairing; the thickest line represents eight sites.
Fig 2.
Observed group size of babblers in a subset of sites surveyed in 2008 and resurveyed in 2009.
(a) Sites without restoration works; (b) sites with restoration works. The symbol size, and numbers within, reflect frequency of that group size. Lines connect the two observations in time at particular sites. Line widths reflect the frequency of that pairing.
Fig 3.
Parameter estimates from the occupancy submodel of Grey-crowned Babblers for sites at which babblers were detected in 1995.
Symbols represent point estimates as the posterior median (and 95% credible intervals represented as lines). The x-axis presents the effect size, which is on a logit scale, the second x-axis, above the graph, presents the effects transformed back into odds ratios (or odds for the intercept). The parameter estimates for the various effects represent the additive change to the mean probability of occupancy resulting from the observed range for the particular factor. Interpretation of effects on the raw scale is as the multiplicative change to the raw mean probability of occupancy.
Fig 4.
Parameter estimates from the group size submodel of Grey-crowned Babblers, conditional upon occupancy at a site.
Symbols represent point estimates as the posterior median (and 95% credible intervals represented as lines). The x-axis presents the effect size, which is on a log scale, the second x-axis, above the graph, presents the effects transformed back into raw numbers. The ‘average’ is the intercept and is the mean group size in 1995 for the average site, at the average distance from nearest group and with the average density of large trees. The parameter estimates for the various effects represent the additive change to the log(mean group size) resulting from the observed range for the particular factor. Interpretation of effects on the raw scale is as the multiplicative change to the raw mean group size.
Fig 5.
Expected group size for Grey-crowned Babblers at average sites for restored and unrestored sites in 1995 and 2008, the change in group size over that period and the effect of restoration on that change.