NEXUS file containing 175 resolved alleles from intron 19 of the chromo-helicase DNA binding (CHD1Z) gene sampled from 105 Common (Green-winged) Teal (Anas crecca). Populations (OW, Old World; NW, New World; Attu, Aleutian Islands; Shemya, Aleutian Islands; Adak, Aleutian Islands; Ugamak, Aleutian Islands) are defined within the file. Note that CHD1Z is located on the Z-chromosome, and therefore, females only have a single copy.