 Being the largest primate on Bioko Island, the drill is also one of the most expensive and therefore sought after by hunters.Bioko dills are more easily hunted with the assistance of dogs and shotguns, and hunters will sometimes mimic the bleat of a duiker to find them.Regulation of bushmeat hunting has had little effect, as announcements of imminent hunting bans are predictive of surges in carcass levels seen at the bushmeat market, thought to be a result of panic and an increased economic incentives, and bans themselves remaining unenforced.