I have Blue Wyandottes that went broody constantly last year. I started the cage deal & some took as long as 5 days. Well I have a new winner. One of my 8 month old Columbian Wyandottes went broody & she is on her 13th night in the cage with no sign of quitting. My others would pace in the cage when I would enter the coop even if they continued trying to set later. I have to remove this squirrel from the cage when I want to let her out, she will not go out on her own. She may soon be Sunday dinner!