This chick recently hatched a few days ago and it's been feeding on instant oatmeal, since we're still looking for chick starter feed. He had access to clean water and food at all times. There were a few times we thought he had pasty butt so we got rid of it. However his poop has been getting progressively darker and less watery, and is now black/close to black. It's also quite thick. The chick does not seem lethargic and was running around a while ago. Is this a cause of concern? It's the only chick, so we're very worried
I've looked at the website on the different types of normal poop, but they do not really look like this chick's poop from my perspective.
We'll be grateful for any input! (sorry for the upside-down picture)