I just want to add some additional praise for the wool hen. You can find pics of mine in post #95 of this thread:
https://www.backyardchickens.com/t/1133855/a-wool-hen-creating-one-today/90
We had our first frost this morning and the temperature dropped to 1°C and the 3 week old Araucana chicks are all happy and healthy.
I was a little nervous as there's only 4 of them (all the other chicks sold at the fete on Saturday) and I was concerned that they mightn't have enough combined body heat but all is well. I'm glad that I didn't succumb to temptation and give them a hot water bottle or worse yet, a heat lamp(!) as this now proves in my mind that a heat source really is unnecessary when brooding chicks. All they need is decent insulation.
Looks great Sparky I think I will give that a go too. When I do the next hatch.