Would it be wise to purchase an adult rooster so you know his personality and sound?
It can be -- though there are some potential biosecurity hazards and there is no guarantee that the bird won't act differently in a new environment.
My previously reliable flockmaster, the fellow in my avatar, developed an attitude problem this winter that very nearly put him into the crockpot. He's calmed back down, but it might easily have escalated into a full-on attack.
Maybe after we figure out what the hell we're doing ha ha.
This. Get the hens and enjoy them alone for a year to smooth your learning process.
How often do you get a mean rooster?
Good question.
Sometimes aggression is in the blood -- the bird simply comes from a line of bad actors and there's nothing to be done about it.
Sometimes a bird that has potential to be aggressive or not will learn aggression or not due to the environment it's raised in. Some people swear that handling your males as they grow will turn them aggressive because they lose all fear of humans. Some people swear that it will build their trust so that they never lash out.
It's often the bold, "friendly", chick -- the favorite pet -- that becomes the unholy terror when the hormones hit but it's not inevitable. No sound answers, no guarantees.
I do not feed medicated feed. I keep the brooder dry to not allow the protozoa to breed uncontrollably. The third day that they are in the brooder, I take a scoop of dirt from the run and feed it to them so I can introduce the protozoa and they can develop the immunity they need to the strain they need to develop an immunity to. Since I keep my brooder extremely dry and the water clean the protozoa can't reproduce so every three days I give them more dirt from the run so they get more protozoa and can develop immunity. I don't lose chicks to Cocci when they hit the ground.
I do feed medicated feed (mainly because getting the unmedicated is extra trouble and cost in my area), but I adopted your recommendation as soon as I started raising the second batch of birds.
*Maybe* there's no dangerous protozoa on my land, which has never had chickens before, but by doing this and continuing the medicated feed for a week or two after I put them into the integration pen in the main coop for the past 2 years I have yet to have a problem with my youngsters.
