Pullets not roosting

[myCatalina]

Is that window in the picture left open? Is it the only ventilation in the coop. Both could be problems.

Chickens, even in winter, need a lot of cross ventilation. It is best provided at the top of the coop, just narrow, wire covered areas. Otherwise moisture builds up and will freeze in cold weather, and they could die of cold.

It might be a good idea to move the roosting bars away from the window if it stays open.

The window is closed. There is ventilation across the the front ceiling area where there won't be a draft on the roost. Thanks