Speaking of natural instinct. I have 15 BR hatchery stock. 5 weeks old. The cockerels are just starting to get a bit rooish, so have been working on showing them who is the dominant roo...ME. One way, if they peck me, for handling the pullets, I "peck back" by gently tapping their beak, or walk towards them and make them back away from me. I won't have a human aggressive roo in my flock for ANY reason.
Today, I had one of them that wouldn't back down, so I did my best "cocka doodle do" it was hilarious, everyone ran and hid behind their feeder and stood completely still until I said, ok guys, it's ok, then everyone was back to doing chicken stuff....even the cockerel that bit me, ran and hid...so it's good to know, they will answer the danger call, even at 5 weeks!!!
Plus, the cockerel that bit me, and it was not just a little peck, but a good, do not touch my pullets, peck, stayed his distance, and when I approached him again, he moved away.
I also hold them upside down, in the palm of my hand, till they stop their ruckus..seems to work, so far, I will know more when they are 6-12 months, if nay are going to be truly human aggressive, but thought, if I worked with them young, to show I am the dominant one, maybe I will have less chances of human aggression? Just a test for me, to see if it works down the road....oh and I believe I have 3 cockerels out of the 15.