@sunflower4you
I'm in Indiana. When the flock was smaller I kept the feed inside. I prefer the feed inside, but my hen shed was such that I did not get rodents inside (and still is).
Last year I had to put it outside because of not having enough room indoors. I really don't like the feed outside as I feel that it draws rodents to the living area.
Funny how the inside feeders say they like it because it keeps rodents away; the outside feeders like it because it keeps rodents away . But in a barn-type setting which isn't rodent tight, it would be totally different for which I like better.
Anyhow...
They will go out if they can see ground to walk on. I did a lot of shoveling last year. Alternately you can throw wood chips or leaves on a path to the food which helps them see that it is the ground.
I refuse to do all that shoveling this year which is why I want to move the flock into the pole barn for the winter. Food will be inside and I'll have to keep mouse traps set all the time unfortunately. I really prefer them to stay in their normal setup as they will be able to get outside more. But last year the older hens wouldn't let the pullets go inside and it was way too cold weather for that ridiculousness. Since the hen shed was really too close of quarters for them to be inside all day long, it was a constant issue. On the worst days I left the pop doors shut to protect the pullets from being shut out in the extreme cold. But it was NOT a good solution.
Therefore...kennels in the pole barn this year. It's an experiment and I may hate it but I'm going to at least try it. The part I won't like is that they won't be able to go outside freely if they choose to do so. But it will give them more indoor room and keep the youngers from being banned outside in extreme weather.