Our squirrel gliders (Petaurus norfolcensis seem to be doing well in their nest box. According to wikipedia, they live in colonies of one male, two females plus offspring. It is hard to tell from this tangle of bodies, but this seems to be the case. We have another next box sited high in a nearby grey gum (Eucalyptus punctata). It doesn't currently have a glider colony in it, but fresh gum leaves suggest that one may have resided there recently.