I was out with my baby chicks (7 weeks) and I was right down close to them while they were drinkng water and I noticed that one of them (crevocoeur or black polish) was making a loud wheezing sound while she/he was breathing. Then I noticed that she has an extra hole on the top of her beak. Its about exactly the size of the 2 side nostrils, and centered perfectly. She doesnt behave any differently than the others, doesnt seem sick at all. Has anyone ever heard of anything like this? I will try to get a picture shortly.