Summary of the genetic diversity and heterozygosity indices at 9 microsatellite loci among the capercaillie from 8 natural populations and 2 breeding centres (n = 260).

N–number of unique genotypes identified in non-invasive samples (see Table A in S1 File for details) or number of sampled individuals (see Materials and methods); A–mean number of alleles per locus; R–mean allelic richness; P–mean number of private alleles; P1 –mean private allelic richness; HO–heterozygosity observed; HE–heterozygosity expected; HWE–P-values for HWE exact test for heterozygote deficiency/excess (ns—non-significant (P>0.05)); FIS–inbreeding coefficient (no FIS value proved significant after Bonferroni correction, 1800 randomization, adjusted P-value = 0.00056); NC—estimated census size of natural populations (given as number of individuals).