Hi. I have 2 chicks outside 10 weeks old and 3 chicks 4 weeks old that are out growing there brooder can i put them together? and how do i do this? It is quite cold here now are the younger chicks to young to go outside yet? Advise needed please. I also am unsure if the the 2 older ones are boys or girls? I'll try and put on a photo. Cheers Sam buff sussex and welsummer at 10 weeks.