OKCAT where are you located? What kind of weather are you expecting over the next week? I don't mean "cool" or "warm", I mean what are your forecast temperatures, especially lows. There are a lot of places in the world right now that 4 week olds will do fine outside without heat. I had a broody hen wean her chicks at three weeks of age over a month ago, some overnight lows were in the 40's Fahrenheit. Age is not the only determining factor as important as it is. How well they have feathered out, how well the coop protects them from wind and rain, and how well they are acclimated (exposed to cooler temps) all factor in, but 4-week-olds are capable of doing quite well.
The chick is only a couple of days old. That broody hen should be very protective. When dealing with living animals you can't know for sure what one will do, but hens have been raising chicks with the flock for thousands of years. I let my hens raise their chicks with the flock and almost never have issues from that.
Can something go wrong if you let her and her chick mingle with the flock? Yes it is possible. Can something go wrong if you keep her and the chick isolated form the flock? Yes, it's possible. I've had more problems when I try to isolate them than when I let the hen raise them with the flock. If it were me that hen would be raising her chick with the flock.
I would not put the RIR's in with the hen and chick. In a confined space that could be dangerous to the RIR's.
The chick is only a couple of days old. That broody hen should be very protective. When dealing with living animals you can't know for sure what one will do, but hens have been raising chicks with the flock for thousands of years. I let my hens raise their chicks with the flock and almost never have issues from that.
Can something go wrong if you let her and her chick mingle with the flock? Yes it is possible. Can something go wrong if you keep her and the chick isolated form the flock? Yes, it's possible. I've had more problems when I try to isolate them than when I let the hen raise them with the flock. If it were me that hen would be raising her chick with the flock.
I would not put the RIR's in with the hen and chick. In a confined space that could be dangerous to the RIR's.