Nancy Kincaid of Charleston, W.Va., writes, "My husband and I feed birds and squirrels in our backyard, and we have a special male cardinal we have fed for the last two years. He and his mate have raised many young during this time, and we have enjoyed watching them grow and visit our feeders. This male cardinal watches for us and flies to our deck railing for peanuts and almonds. My question is, why does he have no feathers on his head and neck just black skin? He has lost these feathers each of the last two summers, and they seem to grow back by winter. Can you explain our bald cardinal?"