Those look like single combs.
Pea comb can sometimes look like three rows of little peas (round green vegetable) lined up along the chicken's head, which is probably how it got its name. Sometimes it is just a little blob instead of the tidy rows of peas, and sometimes it is a big weird-looking...
I think you might be right about them being Leghorns, and I am pretty sure you are right about having one male and one female.
I can't see the combs clearly. If they have pea combs, most likely Easter Eggers.
If they have single combs, they could still be Easter Eggers, or maybe Silver...
Freezer camp is one solution for any rooster.
But as long as they are not Cornish Cross, you don't have to worry about them suffering major health issues while you figure out what to do, so I agree that is easier.
That comb definitely looks male to me.
I don't think the body is round enough to be a Cornish Cross, so maybe a White Rock or a White Leghorn or a male of one of the Red Sexlink types. Quite a few chicken breeds come in white, and it can be hard to sort them out, especially when they are young.
In the recent photos:
Chicks in the plastic tub brooder, white chick closer to the bottom of the picture.
Chicks in the new coop, photo with red lighting, chick up on the perch.
In both cases, it's hard to be sure because of the color of the lighting, but I think I see a chick with white...
Good point! I hadn't thought to look carefully at the chicks to double-check the breed identifications, but now that you mention it, I agree that there are no Barred Rocks in the pictures.
For chicks up to about 3 or 4 weeks old, 1 square foot each should be fine. But past that point, I agree: it is not enough.
If the chicks are currently less than a week old, that would mean they've got another 2 or 3 weeks in which that coop should be large enough.
I agree. The nests are for...
Having a bigger space makes an enormous difference in how they get along.
Yes, chicks are individuals, and your chicks may not behave the same as "most" chicks. But in general, adding more new ones at the same time will spread out any aggression, so each new chick gets picked on less.
For...
A suggestion for the near future: either set up the coop and move the chicks and heat lamp out to the coop. Or get a great big cardboard box (like 4 feet square) and move both sets of chicks into it.
At their current ages, it should be safe to combine all the chicks into one large brooder, with...