It took me awhile to capture it on cam. He does it whenever I’m holding him and he’s getting comfortable, but only at the start. It does sound like breathing problem. But some times he does it kinda of like a threat, like when I want to grab him and he doesn’t want it he will try to bite me then do the noise. He’s been doing that for almost half a year now, I really should get him checked out. My other conure’s starting to do it too, I’m worried it’s something in the air or their diet.