I have been stressing out a little bit about merging my flocks but today I finally did it. I have three groups of chickens. Ten 9 month olds, seven 18 week olds and eight 12 week olds. They didn't hardly fight at all. This one hen kept chasing my other hens around but she was never able to catch them. I think I saw maybe 4 or 5 pecks in the hour I watched them. Now they are all hanging out and grazing together. Was I just really lucky? I've read some awful horror stories about merging. So my question is: I now have two flocks. 15 and 10. The flock of 10 is 9 hens and 1 rooster. My flock of 15 are all hens. Is there anything I need to be weary of about introducing a rooster to a new group of hens? Will the rooster attack any of the hens or does he know his place as king of the chickens? Thanks!