right now i have 1 rir and 1 barred rock my first question is, are they warm enough just being the 2 of them? it gets down to 20s at night and i worry they are cold, i just lost one last week..there used to be 3 to snuggle :-( My second question is... i just ordered 3 light brahmas chicks, when the time comes to put them outside with the other 2 will they be ok? is it ok to mix breeds? also i plan on adding on more run space and a new bigger coop will the 2 outside now be ok with the change? we might not be able to do the adding on untill later so i might have to start out with putting all of them together in the space i got now will that ok? our run now is about 10x6