They typically will only use one or two dens at a time, rotating through all of their dens every six months.
ðeɪ tˈɪpɪkli wɪl ˈoʊnli jˈuːz wˈʌn ɔːɹ tˈuː dˈɛnz æɾə tˈaɪm, ɹoʊtˈeɪɾɪŋ θɹuː ˈɔːl ʌv ðɛɹ dˈɛnz ˈɛvɹi sˈɪks mˈʌnθs.