Photo: Pain Adventure on Flickr

Reseachers from the Yellowstone Wolf Project trapped and collared a young dispersal male, identified by his tracking number, 1289M. Shortly after being collared, 1289M was spotted with a female. The female currently has no collar, but has been identified through camera traps as 1294F. The group has been named the 1289M/1294F group. The group has been nicknamed "Sheepeater Cliff" for its proximity to the unique landmark with the same name. Through radiometry of 1289M's movements, researchers estimate the group's territory size to be around 250 km². As Sheepeater Cliff is located in the northern area of the park, competition is fierce with established packs, so a consistent territory has yet to be established. Neighboring packs such as 8 Mile and Lupine border the 1289M/1294F group.