Hardy-Weinberg Equilibrium in fledglings sampled on Cousin
There was a significant deviation from HWE among fledglings (individuals <3 months of age) on Cousin, with a deficiency of heterozygotes (n = 591, FIS = 0.12, P = 0.002, Table S3, Fig S1a). However, there was no deviation from HWE in those individuals that survived until adulthood (individuals >1 year, n = 380, FIS = 0.08,P = 0.13 Fig S1b). Individuals caught <3 months of age were then separated into hatch year, and HWE was assessed for each year. The heterozygote deficiency was consistent across most years (indicated by a positive FIS), but with limited power, only 2007 showed a significant deviation from HWE (n = 53, FIS = 0.31, P = 0.04, Table S3).