All of my chickens (10) were roosting in the roosting house. Now for the past week some chickens are not going in a night. I don't like leaving them out at night because of predators (I have a pretty secure area for the) but I live very rural with fox, weasels and the whole gambit of predators including mountain lions. For 3 nights I have been rounding up stray chickens who have not go into roosting and putting them in. Any suggestions?