Hen refuses to eat feed, wheat, corn, but eats other foods without issue

[Anon112]

You might try what's called Exact Baby Bird formula. I did tube-feed a different ill hen with this after getting training by a vet, and it is effective for keeping a bird alive. You can buy it in a 7 oz pouch just to try. I mixed it up and then mixed it in yogurt when not tube-feeding. It has a sticky consistency by itself that they sometimes don't like when eating it orally.
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A poultry vet who used to come see my chickens was a big fan of Exact for chickens who had lost weight for whatever reason. And the chickens I fed it to---aside from one who was literally on her deathbed--all gobbled it up. Add a few mealworms as "garnish" and they really loved it.

 

[ChicoryBlue]

A poultry vet who used to come see my chickens was a big fan of Exact for chickens who had lost weight for whatever reason. And the chickens I fed it to---aside from one who was literally on her deathbed--all gobbled it up. Add a few mealworms as "garnish" and they really loved it.

Great stuff, I keep the canister size in my freezer.