Fitness cost of captive phenotypes
Survival of captive-bred juvenile orange-bellied parrots had a significant negative relationship with ΔQ P10, and to a lesser extent LT (Table 1). Smaller values of ΔQ P10 indicate that feather is longer, and thus more like the wild phenotype (Figure 2). Based on the model, the probability of survival for a juvenile captive-born orange-bellied parrot with a ΔQ P10 of 1mm was 4.84% (highest posterior density intervals: 8.75e5 – 0.35), compared with only 1.8% (highest posterior density intervals: 1.34e5 – 1.77) for an individual with a ΔQ P10 of 2mm.