I have had my gals do this also with the barn door. They think the glass isn't there. The door in the Hen House has a curtain on its large window so the don't try to fly through it. Silly birds!Something I Never Thought I would See!
Betty flew into the coop door today at roosting time. I have video from both inside and outside the coop. You need to watch closely because it happens very fast. Here is where to watch for the impact with each video.
From in the coop
View attachment 2978200
From outside the coop
View attachment 2978201
Quite possibly the craziest chicken related thing I have ever seen.