Icatty, I am not sure the the wait with Greenfire now, but I waited a little over a month. My chicks (now 7 weeks) are outside in a coop and they seem to be not phased by the temp. dropping at night. I do still have a light on, but I am not sure they are even sleeping under the light. I am still not sure about the genders on a few of them. I will have to get more photos posted soon. They seem to be growing a little slower than my spring chickens. Does this happen often with fall hatches/chickens? I haven't wormed or vaccinated my chicks but plan on worming all my chickens soon. I can kinda see not vaccinating but worms are more environment. Right? Also are the diseases that they would be immune to in Sweden the same diseases we have in the US. I do use DE in their coop and food.