From the Wolf Conservation Center:
YELLOWSTONE — Yellowstone released the Wolf Project Annual Report for 2017.
“According to the report, staff recorded six uncollared adult wolf deaths and they were all caused by humans. Five were killed during the wolf hunting season in Montana (one old adult, three adults, and one pup) and one, the 12-year-old white matriarch of the Canyon Pack, was illegally shot inside park boundaries and had to be euthanized by park staff.”