My question is this...what is too aggressive? A couple of my hens have pecked hard enough to pull a couple feathers out of the 4wk old pullets. No blood. They have plenty of escape places and lots of space. They know how to run!
I would say as long as they are not actively seeking them out hunting them, and chasing them down, then I wouldn’t worry.
My silkie was actively hunting them down and wishing to do serious harm to my three chicks, but they are 5.5 was old now and she hasn’t been going after them the past few days. They also know to stay away from her.
Mine have been fully integrated with my flock, other than night time roosting, since they were 3 weeks old.
I started when they were about a week old bringing them outside in a small box - they could stay in the box or wander around, I sat on a lawn chair and watched.I did this 2 times a day for about 15 min or so.
By 2 weeks they were zipping around like mad things while I sat on my lawn chair and watched, they were pecked good am hard a few times by the bossy hens, and that is when I noticed my Silkie stalking them. They learnt very fast to stay clear of her.
At 3 weeks they were running around with the flock all day here in the barn and could go out in the run if they wished. I still kept an eye on them, my office is in the barn, so that made it easy.
My little cockerel started crowing at 3.5 weeks and by then they were fully integrated into the flock, everyone pretty much ignored them, including the Roo.
Now at 5.5 weeks they are out and about with the big ones, they even get involved in the scratch grains scrum stealing from the others - they are fast and can fly really well. They have been no trouble integrating with the flock at all, I still need to start getting them used to roosting at night in the hen house, but it’s been extremely cold here and I have been keeping them in their bin in my office. Tomorrow night though they will need to go in the hen house as I have 10, 2 week old chicks coming here on Wednesday.