I've noticed that when my hen that is in quarantine eats she seems to rub her beak in a diagonal/sideways motion when eating and she makes a clicking noise at the same time. I've never listed to a chicken eat before until I've had her in quarantine so I am wondering if this is normal? I've read that a clicking noise could be an upper respitory infection but I see no discharge coming from her and I only notice it when she eats, is this normal?