The AVIANDIV project employed anonymous genetic markers, so called microsatellite loci spread across the whole genome. It was shown that 33 populations had no unique alleles, 14 populations had one unique allele, but the Yurlov Crower from Russia has 8 unique alleles.
The AVIANDIV project used anonymous genetic markers called microsatellites, which are found across the whole genome.  It was determined that 33 populations lacked unique alleles, 14 populations had one unique allele, while the Yurlov Crower from Russia has eight unique alleles.