'My emu Blu has runny poop and is was laying down with his eyes closed. He's slowly panting a bit.'
Tame-wild emu guy here:
Runny poop? Runny poop is quite normal -- but not the color in the photo!
Emus only start panting when it hits about 100 degrees. Never seen an emu pant otherwise.
Happy full-of-food emus will sit for long periods. In the spring, they'll even roll on their sides to sun their bellies. However, an emu sitting otherwise is cause for great concern.
How on earth do you tell the difference?! If they have all fed, and are all standing quietly or sitting, that's okay. But if, for example, a clutch was feeding -- some number of chicks with their Dad -- and one chick was sitting, that's bad.
If the bird is sitting and is unconcerned about its environs -- like noise or people being close -- that's bad.
Supreme Emu, Lake Muir, Western Australia