Some birds will start up late winter (especially younger birds) and some will wait until spring is in full swing. Both are perfectly fine, they're going to do whatever they're going to do. Enjoy it but know they won't necessarily start up this early as they get older nor will future birds start...
Main concern is disease. Make sure he is quarantined for a month before introducing him to you flock and make sure they quarantine him when you send him back
What breeds do you have and do you have especially young or especially old birds? As long as they have adequate draft free ventilation most birds are fine at those temps. Just make sure the water doesn't stay frozen (and keep it out of the coop as it adds humidity and humidity is the enemy...
Sir, I don't agree with this being age restricted either but the decisions of what's age restricted and what isn't is well above my head. If you have a problem with it take it up with the county, getting mad at me accomplishes absolutely nothing, I just work here and am just doing my job
I agree, late blooming cockerel. The presence of more dominant birds can delay development in cockerels and deter them from crowing which might be why he isn't going after pullets or crowing yet (that and every bird is different). Give him time and he'll likely do all that eventually
So 3 roos to 7 hens from what I gathered? That is way too many boys for the amount of hens you have. I would have one at most with that few. I would keep the one you like best and remove the other 2
Only improvement I would make is to uncover the vents if they are covered, poor ventilation leads to moisture buildup and condensation which leads to frostbite. Otherwise that coop looks fine
25F is nothing to chickens, it's not until you get subzero temps that you have to start worrying. Silkies are a bit more vulnerable but even they will be perfectly fine in the 20s as long as they are dry, can get out of the wind and have proper ventilation. The heat is actually more of a worry...
Best way to have nice livestock is to treat them with care and respect and don't put up with mean individuals. Mean animals produce more mean animals. Aside from that there are too many nice roosters who need homes to put up with ill tempered ones. Yes, nurture does play a part in behavior but...