Hi guys. My pigeon is now 13 days old and he’s doing good. I just have a question, he will sometimes stretch his neck up and open his mouth then go back to normal. This usually happens after/during feeding. It’s not a constant thing it just happens sometimes and I really don’t know what it could be. I was thinking it reminded me of a burp but I’m not even sure if they do burp lol. I could not find anything in google either. Anyone ever have this happen?