i have a hen that has been setting about 30 days. some of the other hens layed eggs in the same nest when she would get down to eat. i had another hen that was setting also, and they swapped nest and one of the eggs has hatched. do i need to bust the eggs and start over? this is my first time that i have broody hens. please help. i do not want my hen to die from setting on the nest too long