Silky raising chicks - how cold is too cold?

[Dolittle]

I have a Silky hen with 4 chicks that are 5 days old. It is Autumn here with temps dropping to around 6 degrees Celsius over night (days are warmer). She is in a hutch on the ground with lots of straw & insulated roof, should I be doing something to help her keep the chicks warm? If so what?
I gave a lamp but thought that might keep them too warm .
Appreciate any advice, am literally losing selerp worrying about them.
Thx

 

[oldhenlikesdogs]

Mom should be able to keep the chicks warm. I wouldn't use a heat lamp.

 

[love4mychickens]

Mom should be able to keep the chicks warm. I wouldn't use a heat lamp.

I agree.