I have a 4 week old and 2 one week old chicks. I know the week olds are nowhere near ready, but the 4 week old can fly to the top of her brooder box (3 ft high) and seems well feathered out. We live in California and the lows have been in the mid 40s and highs in the upper 60s. She won't go for another week or two...but am just wondering if these temps are sufficient to be outside. Thanks!