Gerbil Dominance question-

[Chris Keil]

I was just watching out three cages (Frick and Miranda get the screen taken
out tommorow, BTW) and was wondering...  Is there any way I can tell the
dominant gerbil?  I'm guessing it's the older Frack in his and Faustus'
cage, and I imagine it will be Frick over Miranda, but how about the 3 boys?
They're all about the same size.  Any way I can tell by behavior or sleeping
patterns?