Given a reference text about the Northern Colorado Bears, tell me the different conferences their teams compete in.

The Northern Colorado Bears are the athletic teams representing the University of Northern Colorado in Greeley, Colorado in intercollegiate athletics. The university sponsors seventeen teams including men and women's basketball, cross country, golf, tennis, and track and field; women's-only soccer, softball, swimming and diving, and volleyball; and men's-only baseball, football, and wrestling. The Bears compete in NCAA Division I, with the football team competing at the FCS level, and most teams are members of the Big Sky Conference.[3] Three Northern Colorado teams have separate affiliations in sports that the Big Sky does not sponsor. The baseball team competes in the Summit League, the women's swimming and diving team is an affiliate member of the Western Athletic Conference, and the wrestling team is a member of the Big 12 Conference.

The Northern Colorado Bears teams compete mostly in the Big Sky Conference. However, some teams compete in the Summit League, Western Athletic Conference, and the Big 12 Conference.