Hi! I got my quaker parrot yesterday and noticed he is trying to regurgitate but nothing is coming out. Hes is 4 months old should i take him to the vet? I have video of him doing it but it won't let me upload it here. There's no sound when he does it, and he seems to do it whenever I'm trying to offer him a treat and when i go up to cage and talk to him. Is this normal?