What is the gender of these 3 - 7.5 week chicks?

[C Siena]

I'm still new and I understand the 15 chicks are young, 7.5 weeks. I'm seeing what I think are at least 2-3 cockerels, depending on what happens in the next few weeks, there could be more. The 2 with larger combs have had larger combs since 7-10 days old, now even more pronounced. The BR looking chick has a light grey wash on the legs. If the mother was BR, it's a cockerel. If the father was the barred, then I think it could be either, but unsure.
Most of the chicks will be a BYM but possible to have a pure RIR or Buckeye, in the other 12.

Please help with your knowledge.

 

[DemeterAD9]

There’s a boy in each photo. Any with notable comb growth like the ones shown are definitely males. Some boys show themselves early like the ones you noticed at 7-10 days. Others can take a while to show but by 9-10ish weeks you should start seeing the long saddle feathers and rooster tails developing. Plus they will start crowing anywhere between 6-15 weeks give or take.

My 10 week olds are definitely starting to act like boys but I’ve had all but maybe 2 separated into a pen for just the males at probably 5 weeks old, granted I also had 2 suspicious pullets with them till now too

 

[C Siena]

There’s a boy in each photo. Any with notable comb growth like the ones shown are definitely males. Some boys show themselves early like the ones you noticed at 7-10 days. Others can take a while to show but by 9-10ish weeks you should start seeing the long saddle feathers and rooster tails developing. Plus they will start crowing anywhere between 6-15 weeks give or take.

My 10 week olds are definitely starting to act like boys but I’ve had all but maybe 2 separated into a pen for just the males at probably 5 weeks old, granted I also had 2 suspicious pullets with them till now too

Thanks. We already have 2 roos and do not want another, we want a peaceful flock. No one I know wants more males. I'm unsure of BR looking chick is male or female, I'll have to wait a few more weeks.

 

[DemeterAD9]

Well, when hatching your own eggs I think it is good to come to terms with having to cull the extra males. As you said, no one really wants a bunch of cockerels and if anyone does chances are they plan to either butcher them or use them for practice fighting (depending on if cock fighting is a thing in your area). There’s also a few people who feed their pets a raw diet (dog and exotics specifically).

I have been able to sell 2 cockerels to someone with a laying flock but other than that I butcher them for the table. If you cull them young, say 15 weeks, they are still fairly tender but a mature roo will be better off as soup. Just my 2 cents.

 

[C Siena]

Well, when hatching your own eggs I think it is good to come to terms with having to cull the extra males. As you said, no one really wants a bunch of cockerels and if anyone does chances are they plan to either butcher them or use them for practice fighting (depending on if cock fighting is a thing in your area). There’s also a few people who feed their pets a raw diet (dog and exotics specifically).

I have been able to sell 2 cockerels to someone with a laying flock but other than that I butcher them for the table. If you cull them young, say 15 weeks, they are still fairly tender but a mature roo will be better off as soup. Just my 2 cents.

I'm familiar with culling as I had to do so the past couple of years. Our Belgian Malinois And Maine Coon are on a raw diet, so they ate the others
Last year, I was able to trade 2 cockerels for a hen. The family just purchased about 100 ISA hens. They also sold me a 5 month old ISA hen for $11, as they understood I did not want to introduce a single hen. That was Great.

Yes! on age. We tried a 7 mo cockerel, gave it to the dog/cat. We may try a younger one, but heck we have to purchase raw meat for the pets, so why not cut the grocery bill. My hands have arthritis, so I dress out removing the skin/feathers, give the organs/heart to the pets and pressure cook the feet/bones, for bone broth.