Chickens not returning to coop at night
Yup, leaving them in the coop for while often helps. Also, make sure the coop is clean. No mites or other bugs that come out at night. Not too long ago I had that problem where they wanted to stay under the barn instead of 15 feet away in the coop. Turns out I had mites that bothered them at night and they didn't want to roost in the coop. Did a real good cleaning and now things are back to normal.