Three wk old chick, chirping constantly, standing off by itself

[Wyorp Rock]

Thanks so much.

My birds are all on a product from a vet that makes it unlikely it was coccidiossis. I keep chick grit available for my babies, as well as a sandy surface in one of the brooders.

I'm stumped.

Some chicks fail to thrive even up to a month old. Could be a lot of things from internal organs not developing correctly to a genetic defect.

It great that you have vet care. If you don't mind, what do they give your for the Coccidiosis?