Now I honestly have no idea what are the baby noises as I got mine when he was 8 months
Does your bird puff up it's neck and flatten the top of the head? Is it like a fluid up and down motion, or just head bobbing? (different from regurgitating)
I am curious myself as I am still learning about conure body language, but from what I could pick up, when mine does the "snake/dragon dance", it means territoriality or agression, but I guess for young birds they are just being super excited and trying to learn how to be big birds. Mine never bit out of agression even when he was doing it.
Another one I have seen is a funny head bob with squeaky sounds, but I know it means that ye wants to fly off somewhere. He will lean his body forward, preflight pose.
And there is the happy head bob with all kinds of sounds and screeching, he is just dancing along. Similar to the pre-flight head bobbing, but here he stays in place and is obviously just having a good fun. Often will start marching around when he gets super excited! Very funny behaviour.
If others could share their observations I would be super glad! Maybe i misread my bird's body language, wouldn't that be a bummer.