Black-backed gulls culled
Gulls culled . . . Southern black-backed gulls causing havoc in the Waitaki Valley have forced the Department of Conservation to control their numbers. PHOTO: SUPPLIED/DEPARTMENT OF CONSERVATION A threat to nationally endangered birds in the Waitaki Valley forced the Department of Conservation (Doc) to step in last week. Doc undertook control work to remove southern black-backed gull colonies from the Waitaki River, east of Kurow, as the gulls were preying on black-fronted tern and wrybill colonies. There were “unnaturally high numbers” of the gulls in the lower Waitaki and the colonies t...