well i think that if it waz a yawn it wouldnt have stuff coming from its mouth i no alot of u will dissagree with this but thats what i think its a burp i happened to mine but i have a v2
Well, if you'll notice, it does this either right before it goes to bed, or right after it gets up. And, if you see it do this, it will go to sleep if you turn the lights off early. So, yeah, it's a yawn.
It looks like there spitting to me! Not singing! Its singing when theres a note above its head! And mine did this in the middle of school a long time after it had woken up! So that stamps out the possbility of it yawning and singing. its either spitting or burping!