Hiya,
I had a colony of males, seven in total. Dasher who at the time was around a year was at the top as the oldest and kept everything in order, he would chase off the older youngsters if they were being too rough with the babies, never aggressively, but they all knew he was in charge, and it worked well in that respect. Billy who was the next youngest at five months, was next in line, then really the four four month old boys, then the babies. The babies I noticed did have a lot more lenience shown toward them in general so age was taken into account. Dasher would also have them sleeping closest to him so they felt safe.
Here's a little vid
