Awww, poor pretty baby boy. If he has problems with diarrhea from the anxiety, they make a probiotic powder for horses and it worked wonders settling Poppy's stomach after we weaned her. He should settle in good after a couple days though :)
Henny is doing great today. No signs of diarrhea and he's really calmed down. He got a short lesson in tying and leading before I nervously let him loose with the other boys. He did great, Bubba chased him around a bit but there were no injuries. Henny was "chomping" at them the entire time, something they do to show submissiveness. They bare their teeth and chomp the air, which I found to be the cutest thing ever. He went back in the foaling stall for feeding time, and he'll be stalled up for at least one more night. I want to make sure they're all comfortable with each other and he trusts me enough before I let him loose in the pasture.
You can better see his coloring in these pictures.