Feeding chickens on rainy days

[Sillls]

I had an issue where it rained and the chickens stayed inside the coup.
The next day they were grumpy, thin and didn't lay any eggs.
I had a silo with straw but they didn't eat it.
Is this a bug or do I need to do something extra on rainy days?
Also what do I need to do in the winter for them?

[NBOX21]

Unless you have the Deluxe Coop, you need to feed them manually.
To do so, interact with the box of hay to the left to grab some, then place them where you would feed them. One hay feeds one animal for that day, so you will need as much hay as you have animals.

During Winter, you will need to place a heater inside the coop to keep them warm (where you place it doesn't matter). You can buy one from Marnie's Ranch whenever she's open for business.

[Sillls]

O I see now. I got to place it on that bench in the chicken coup.
Thanks