black abdomen

I have a lavender Orpington two week old chick that has a black spot under her vent. The spot is hard, but she’s eating and drinking just fine as well as very active. She’s also pooping normally as far as I know and doesn’t seem to have trouble with that. I’m worried that this is something that...

I was curious if anyone knew what was going on here. 2 day old chick (from the worst hatch I've ever had and first time doing shipped eggs) has a squishy abdomen that is turning black under the skin. I couldn't find anything that matched when trying to search the internet-the closest was maybe...