Repeatabilities of flight-initiation distance (FID) in dunnocks measured over a period of 3 years (2012–2014). (a) From bottom to top of panel: unadjusted (square), adjusted (age and days; circle and triangle) and conditional repeatabilities for specific ages (1–6; circles) and time points (100–600 days; triangles) with 95% credible intervals (CIs). Panel (b) shows the corresponding between-individual variances with 95% CIs, and panel (c) shows the corresponding within-individual variances with 95% CIs. The analyses included 857 measurements from 99 individuals: age and day categories had uneven numbers of birds (age: N[Age 1] = 54, N[Age 2] = 39, N[Age 3] = 24, N[Age 4] = 31, N[Age 5] = 25, N[Age 6] = 12; and days: N[Days 100] = 69, N[Days 200] = 61, N[Days 300] = 58, N[Days 400] = 34, N[Days 500] = 26, N[Days 600] = 25).