I have some 6 week old pullets who are starting to outgrow their border. We have highs of around 45 and lows of 28-30 for the next two days. This weekend it's suppose to warm up with highs of 50+++ and lows of 40++s. this is only my 2nd batch if chicks and the others were in the summer so my question is- is it safe for them to move outside now @ 6 weeks? Should I hold off?? And what day should I move them out? They are mainly of the heat source and seem to be doing fine without it- no huddling etc. Thanks for all help.