All advice is greatly appreciated. For now i have cleaned the chick's navel and put a band aid over it to protect against infection. The chick seems tired and is mostly sleeping.
So after taking care of 4 emu eggs in the incubator, the first one hatched on its own on day 52. The baby seems fine and his navel is still barely open but I think it will be close and be fine. This same day in the morning, all other eggs were also wiggling and whistling, but then I noticed that...