This is just a suggestion since I've never had emus, but I've had turkey poults and quail chicks that did something similar to what it sounds like your emu is doing starting around 2-3 weeks old. I was feeding them a 20% chick starter and apparently it wasn't enough because I switched them to a higher protein gamebird starter and the problem corrected itself within a week at most. So is it possible that the baby just isn't getting the right type of feed? Or maybe he's not getting enough nutrients from the feed he has?
