I got a yellow sided GCC 3 days ago, and things have been going great, he has already started taking treats and stepping up, BUT he has started randomly flapping his left wing, more and more frequently, and sometimes both his wings, but rarely his right, he also makes a little quacking noise when he does it, i should note he doesnt have a loss of appetite at all, and has been eating and drinking normally, I have heard this is an attention thing, but I have also heard this is a serious health issue sign, I am worried sick, any ideas?