Have you used DE (Diatomaceous Earth) before? Might help you:
https://www.diatomaceousearth.com/blogs/learning-center/diatomaceous-earth-natural-chicken-mite-treatment
Shame, hope it gets better! Maybe try grinding-up the food to a fine powder. Separate it from the others if you think he may be sick but I'm sure once he eats he'll bounce back :)
Unde
Under good conditions, 10 hours is the max. You did mention it was freezing tho so that's not good. Could another bird have been in there? If another bird was in the box through the night and got off at first light then you may get lucky. Good luck!
Some links that may help:
https://www.backyardchickens.com/threads/chicken-abandoned-eggs-found-cold-this-morning-can-i-warm-them-now.388728/
http://www.irishfowl.com/talk/topic-24724.html?c=8
Hope they all hatch for you!
Food grade Diatomaceous Earth is what we use occasionally to ward off worms. Its a natural product. It is a good idea to deworm at least once every 3-4 months. I just cook up a bowl of rice, let it cool a bit, and add a generous scoop of DE. It sticks nicely to the rice and the chickens dont...
It's highly unlikely - Worms are contracted via eggs found in other poo. I guess any animal that eats/sniffs/touches the contaminated poo is at risk of ingesting the eggs but the egg from the chicken and,while sometimes coated in a little poo, is generally cracked open and then cooked/consumed...
I give a little Food-grade diatomaceous earth in the chickens feed every few months as I was told it's good to help prevent that. I make a pot of rice as just before it totally cools down I mix in the DE. Chickens don't even think twice lol. I think worms come from the eggs found in other...
Thank you, I'll look into that! I'm in South Africa so I'll google that ointment. It's pretty much exactly like the other chicks as far as behavior goes and every time I look at the eye it looks clean. I've never seen it sneeze to be honest :hmm