California wolf populations show signs of inbreeding

Data from the California Wolf Watch and the California Department of Fish and Wildlife (CDFW) indicate that nearly a quarter of wolves in California were born to sibling pairs. Monitoring groups have identified specific instances of inbreeding within the Whaleback Pack in Northern California, which has led to the formation of the Ashpan Pack and the Ice Cave Pack.

State records corroborate these findings, documenting inbreeding activities involving the Beyem Seyo and Ashcan packs as well. While inbreeding is common in small, isolated populations, CDFW gray wolf expert Axel Hunnicutt stated that the phenomenon does not currently pose an immediate threat to the viability of the state’s wolf population. Hunnicutt noted that California wolves remain connected to the larger western wolf population, with animals continuing to disperse into the state from Oregon to maintain genetic diversity.