this is Peep, he is my absolute world. lately i’ve noticed he has been regurgitating or vomiting mucus, but nothing is coming out. His stomach is also making gurgling noises and his poop has bubbles in it. He sounds congested and has been sneezing more than normally. Can birds have allergies? or is this a problem where he needs to see a vet? If so, does anyone know what’s going on?