First Tub (big one) is my moms and babies (babies are almost weaned, some already are). Female weaned ones that I want to keep stay in here too, that way they learn how to be a good mom.
For the males, you can see that they have plenty of space, (stole a 3-drawer rack thing from the wife). Usually, I have only one female with each male at a time, sometime tho I do put 2 females with a male.
Critter Trail cage is where I have been putting weaned males. But, since I have not had males to be removed in a while (I have a lady and a guy that gets feeders from me and males are always the 1st to go.. ), I have one male and one female in here. The male I got from a pet store for free, so I figured I would use him for one breeding before feeding him to my ferret. If you see the Critter Trail, I have put the wire mesh all around the bars and also some tape where the latch is. I have had a mouse here and there get out thru there, so I had to do this to prevent escapes.
The last picture is what I 1st had my males in, but moved them to the 3-drawer set up so that they had more room. Even tho they are feeders, I do not believe in cramming them together.