I had 4 guinea (2 male/2 female) about 5 months old, who share a 5 x 10 ft house with my rooster and one hen. They were locked up in the evening. Always had access to food, water, and a little heat light. In the morning, I found one of the make white guinea in his French wine box with his head and neck (intact) slumped over the side of the box. No feathers anywhere. No signs of any type of struggle. A couple of teaspoons of blood discharged from his beak. Any ideas on how he may of died?