Getting Colder Should I still leave the windows cracked during the day?

[Teresa D]

I usually use a fan pulling air out of the coup and crack the windows or on hot day full open. I am wondering we are getting down in the possible 30's this week if I should continue opening the windows ( I open them in the morning and close them at night ) or leave them closed? I do have ceiling and roof vents.
Thanks for any suggestions. I know they are not suppose to get a draft so I'm thinking they need to be closed in the winter.

 

[oldhenlikesdogs]

Leave them open if they aren't causing a draft where you birds roost. 30 isn't all that cold yet.

 

[Teresa D]

I usually use a fan pulling air out of the coup and crack the windows or on hot day full open. I am wondering we are getting down in the possible 30's this week if I should continue opening the windows ( I open them in the morning and close them at night ) or leave them closed? I do have ceiling and roof vents.
Thanks for any suggestions. I know they are not suppose to get a draft so I'm thinking they need to be closed in the winter.

Thank you.