I have been working on integrating my older flock of 7 who are 16 weeks old with my younger flock of 5 who are now 10 weeks old since the younger ones were 2 weeks old. They were inside the coop in their own space where older ones could see them. Over time, the younger ones were in a dog crate inside the run until eventually they were all placed together. There are multiple feeders and waterers in the run, along with several roosting bars and other places for them to hide. They all go in to coop at night, but the younger ones wait about 10 minutes after the big girls are in. In the last few weeks, I've noticed my alpha brahma constantly chases the younger ones into coop during day and won't let them out. Last night we had a bad storm and she chased them and wouldn't let them inside coop, so several got locked out. I had to go put them all in. Is there a possibility they are never going to integrate? Im thinking about removing the Brahma from the flock