Some budgies like to sleep in odd positions, I've even heard of people with budgies who sleep like they're dead
As long as everything else is okay, I wouldn't worry. He's still young and some baby budgies sleep in strange ways, maybe he'll grow out of it
Just watch him closely and make sure he doesn't have any respiratory illness, or anything like that, but I think he's just fine and is being a crazy little guy!
Just watch him closely and make sure he doesn't have any respiratory illness, or anything like that, but I think he's just fine and is being a crazy little guy!