Cold affecting laying

Hi all,

I may have a problem but I am not sure.

Since the cold snap started one of my girls has been off her food and seems to spend loads of time in the Eglu as though she is struggling to lay.

She looks well, bright eyed, not puffing her feathers up and a nice clean vent. She can also still jump n and off the wall etc.

She also has taken to wandering off on her own and not following the others around the garden as she used to.

Does the cold affect them in any way. What cold weather measures should I follow?

Thanks.

She is around 40 weeks old now.

I am thinking she may have eaten something she shouldn't as my wife told me she was running around with a strip of crip bag in her beak last week that had blown into the garden. When she went to get it from her it had vanished so suspect she could have swallowed it.

Can't feel asnything in her crop though.