Just make a small run,I've been walking in there when building don't see any bug life....you think they'll find bugs? and.. or can I add something to crate something to eat other than feed.
When we did our run, we just put hay and grass clippings down. And after a while it built it up. I know grass clippings are hard to come by during the winter season.
If you have a local feed store, maybe you can get some from there. We have a feed store where I live they sell chicks up to adults. Or find people who have chickens for sell in your area.