First, hope this is in the right section... When we bought our house in late summer, we inherited chickens.... They came with the house. The previous owner moved to a nursing home and we bought the property from his family, livestock included. In the deal were some hens of various types and a spangled hamburg rooster. He is currently running with a matched hen and a few other hens. We collected eggs from them for the hatch along, but are now questioning the fertility rate due to age. The best guess of the rooster's age is 9 years plus.... And honestly he looks it. He is still feisty and loves to 'protect' his ladies when given the chance, attacking our cat. The hens are estimated at 4 and up (the hamburg hen maybe closer to the roos age, but idk). They still lay about every other day, the hamburg laying every 3 days on average. My question- will we see a decrease in fertile rate due to the ages?? Anyone with experience in this field?