My silkies roost

[Madhouse Pullet]

You could lock them in for 2 days and than hope they go in at night.

It may be worth a try. I worry about the occasional raccoon but, I have to put them in every night and if it rains before I get to them they're just a cold mess. I wonder what it is about the coop that they dont like because they both and only they will use it for a nesting spot.