Individual values and averages (with 95% confidence intervals) for 36 breeding attempts of 29 Fan-tailed Gerygone pairs in New Caledonia, during the breeding seasons from 2011/12 to 2015/16, based on 17 microsatellite markers.

ID: number of breeding attempt (corresponding to Fig 1); Pair: number of breeding pair; N: number of sampled individuals in the breeding attempt (including the breeding pair); Allele number: mean number of alleles per locus; Allelic richness: mean allelic richness per locus; HE: unbiased expected heterozygosity; HO: observed heterozygosity, F value: relatedness between individuals; Paternity: all offspring sired by one male (within-pair: WP) or two males (extra-pair: EP); offspring skin colour (poly means both colours occur in a brood); Parasitism: whether a brood was parasitized by Shining Bronze-cuckoo (1 –parasitized, 0 –not parasitized); Genetic constitution: colour based on the first three Principal Coordinates calculated on Euclidean distances and transformed into RGB values.