I have 6 Buff Oorpingtons that are 7 months old. One of the girls seems to have gone broody last week. It's December and I live in upstate NY...I can not get fertilized eggs for her to hatch and I have tried putting her in a dog crate during the day for the past 2 days but she goes right back into the nesting box. What can I do for her and will she cause the other girls to go broody? We were getting 5 to 6 eggs per day and for the past few days we are only getting 3 eggs each day.