How does one determine if their emu is the correct weight? I have 2 boys El is a little over 2 and Ed is a little over 1, they are about the same height but other than that they are completely different. Ed has bigger feet ,a longer beak,bigger head ,very dark brown eyes and a ridiculous over abundance of feathers.He also has big fat thighs and belly. El seems to look more like all the pics of emus you see, sleek glossy feathers,gold eyes etc....but no big fat belly. So my question is is Ed overly fat or is El too thin,how do you tell, both birds eat fine,and run around all day