I know that no rooster is needed to get eggs, only to get little chicks. But I wonder if the presence of roosters near to laying hens have any physiological effects on the hen that improves any part of their cycle. Many animals have spikes in hormones or enzymes that increase reproductive readiness in the females by the presence/nearness of the males. In the information I have read no correlation has been stated to point to any benefits but I wonder...? Do any members know of any positive influence the presence of a rooster has on the hen's reproductive cycles?