Not nearly as much as I thought they would. The junior roosters seemed to squabble more than the alpha, but it didn't last long. They worked out their pecking order and it seems to be working for them. The only time I really have problems with them is if I try to introduce a junior rooster into the group. I'm going to eventually try separating them in the pen behind a fence for a few days or a week and see if the transition goes a little smoother. So far I have three adult roosters in with the hens and I leave the junior roosters and young cockerels in with them. I've found that the senior roosters are the best teachers for the younger boys. They kick butt when needed and teach them who's boss. When the junior boys start pestering the hens that is when I want to separate them.
I'm faced with a bit of a challenge with my roosters. I have three 19 month old roosters from my original flock. Two Welsummers and one Lavender O. One of the Welsummer roosters is a great flock leader and a beautiful bird, so is the Lavender O. The second Welsummer boy is okay. Nothing spectacular, he has a tendency to be a jerk and loves to stick his spur in the back of my leg when I'm not looking. I have no problem with either of the first two roosters being with my hens.
My problem is, if you want to call it that, is that I have 4, 7 month old cockerels that are really nice looking birds. Three are Welsummer/Buff O mixes and the 4th, a super sweet Buff O. Compared to my three original roosters, these boys are amazing. The current flock master is named Primo. He is a big, powerful cockerel -quite beautiful with different shades of bronze/buff feathers and Welsummer blue tail feathers. Every time I look at him I think "WHOW! I can't believe I bred this bird! He's amazing!" His two brothers are also pretty and treat the hens well. No over breeding is going on. The girls seem to like them. The Buff O is also a super nice rooster, very much like his late father and the thing is, NONE of these roosters act aggressive towards me......yet. I know I have that first birthday to look forward to but how often does it happen that you get roosters and hens hatched by your original flock that surpass the original flock? I have to admit that I feel guilty keeping the the three original boys away from the girls but man, it's just SOOOOOOOO sweet to walk into the run and not have to watch my back because of the LO and the Welly are plotting my demise when my back is turned.
Am I just lucky? Or is this what happens when people get lucky with the chickens they are breeding?