This is my first time owning chicks and I am being very over protective (I am 14 years old and raising chickens with a bit of help from my parents) we have 4 Pekin chicks and we bought them when they were 2 weeks old (They are now approximately 5 weeks old) None of them has had problems since now. One of the chicks have a red and white patch above their beak and makes a slight crackling noise we humans associate with mucus. The chick seems to be fit and healthy running around with his friends and he seems to have the perfect heat and food. Is this normal? Since this is my first time I am quite worried. I have been doing all the research I can but I believe experience is more precious so this is why I am asking you guys. Any idea what this could be? I have already read the forums but I can't seem to find the answer.