Does he poop in the morning like that? Or maybe after you take him out of his cage? Because Lillo's (my green cheek conure) poo's are big like freeking condor big in the morning and when I get her out of the cage. So maybe he is just saving it? Or is it all the time that his poops are big?
But if he's potty trained, maybe he's holding it in- which can be a downside of potty training birds. Does he not poop at all while in his cage? Does he have a potty he goes in? Or is it certain spots?
Frootie doesn't poop in her sleeping cage. she holds it in and wait for me to get her out and hold over some TP. I haven't trained her to do this, she just has since we got her.