so tonight after dinner I noticed my GW Macaw dipping his head down(like below the perch) and it looks like he is regurgitating( or he has something similar in his mouth), he is also dipping into his water dish and scraping his beak on his perch often...he ate his dinner fine and got a bite of my quesadilla, has had a grape and almond too....this has been going on for about an hour, any thoughts?