I've always wondered roughly what percent of Cub Scouts actually meet in Dens SEPERATLY and then attend a monthly Pack meeting. In my urban District there are no truely seperate Den meetings. All meet weekly as a Pack. The 2 or 3 bigger, better Packs at least have Dens go to a different room or corner of a room for part of the meeting.
Reason I ponder this now... In my District any CO registering girls will most likely not have SEPERATE girl or boy dens.
Similar to Packs who do not have enough youth or adults for seperate Bear and Wolf Dens.