The Cornell Lab Bird Academy › Discussion Groups › Community Forum › Unusual-looking Cardinals JudyParticipant Chirps: 5 I have a couple cardinals coming to my camera feeder. They have lumps or holes on their heads or necks. They seem to eat and fly normally. Anyone seen anything similar? You must be logged in to reply to this topic. ElizabethBird Academy Hi Judy. Usually this is not something to be concerned about and is just related to molting. You can read more about it on All About Birds here