How is hen behavior different in a hen house compared to the ratio of roosters to hens?

if the majority is on the roosters,the rooster will fertilize the hen. and in some conditions, the rooster will peck the hens feathers of. the roosters wood constantly be guarding it from coyotes, minks, (ect..)the hens wood constantly try to get away. if the number of hens is less than five or in that area,the hen wood have a hard time laying eggs. more eggs will be layed if influenced by other hens. its tradition to put wooden eggs in the nesting boxes to influence them. on the other hand, if theres more hens then roosters, they will spend time with each one, and fertilizing the hens. its best to have only two roosters, along with two emergency roosters.