Should I change the breed I chose? & Constant light for four days?

With 4 straight run chicks, there's a good chance you'll get a few roosters. If you do have some roosters you can sell them, trade them, give them away, or eat them. If you can get a few more chicks, do it. You'll have a better chance of getting pullets.

I keep my chicks under constant light until they're old enough to go outside without a lamp.

 

If you post pics of them, I can tell you what the sex is of BRs, with some degree of accuracy. They are easy to sex from the headspot, down color and leg color, usually. I love my BRs, even the roosters.

I keep light on my chicks for weeks. They need heat, I use heatlamps and they put off light. So mine never see the actual dark till they are over two months old.

 

You'll need to keep a heat lamp on them constantly until they're fully feathered (depending on outside temps). My chicks are 8 weeks old, and I only just started shutting the heat lamp off, it had been on 24/7 this whole time. They need to be kept warm, around 95 degrees the first week, then lower it by 5 degrees per week every week after.

I agree...you'll probably get some roos in there! You could probably order more, then let go of any roos on Craigslist or something.....

Angie

 

Mine lay through the winter, even without artificial light, but it depends on their health, the breeds, etc. When you get your BRs, apply the sexing rules in this article about Dominiques..same rules apply. Then you can tell. The hatcheries use vent sexing, not these methods, but I always sex my BR chicks this way.
http://www.dominiquechicken.com/Sexing_Dominique_chicks.html

 

If you post pics of them, I can tell you what the sex is of BRs, with some degree of accuracy

Hey...can you do this with mutt chicks? We've hatched 22 from RIR and BSL hens and the 2 roos BSL and Dom. We think the BSL fathered most of them, but not sure. Either way, we don't have a clue and they are 3 wks old. May have to wait a few more weeks to be sure. I've been trying to feel for spurs, but all have some degree of a little nub. Oh, well.​

 

When you cross breeds, that muddies the waters, so I would not claim accuracy with those. A BR sire will pass barring to all of his offspring, even if they are another non-barred breed. For example, I cross my BR rooster with my BBS Ameraucana hens and get Barred Easter Eggers, come blue barred, some black barred, but all barred.
You won't see spurs till a cockerel is about 8 months old or so.

 

I have BR roo over BA pullet babies now, cute little black barred suckers but the BA has thrown off the leg coloring thing and because BA's are black and yellow/white at birth it's also thrown off the head spotting.

I just get to wait. Spare roos aren't particularly difficult to sort over time and easy to sell off. Usually a few weeks wait will provide adequate comb and ankle evidence to do a final sort. I just sold off a bunch of four week old delaware cockerals, big pink combs, and great big cankles and a ton of attitude.

In barred rocks it's rarely a mystery for long. All Rocks are good birds to have. I have barreds, partridge and in the incubator, blue black splash and blue barreds. They're easy keepers, good layers and most are sweet natured animals.