A little update. When I went out last night, I did a dehydration skin test by pinching a bit of skin in front of his shoulder. It sprang back immediately, which is good news. I put two water buckets out for him in the pasture when I was leaving.
This morning was good process. The calves weren't in their usual spot, so after feeding him I walked him back over to the water tank (which is under an overhang of a barn, on cement). After about 5 minutes of back and forth and my coaxing, I got him up into the area, to the water and watched him drink. That was fabulous, because a-he trusted me enough to finally follow me up there, no treats! And b-he was drinking. I don't know if he's brave enough to do it while I'm not around tho
I also led him down last night to the cistern and he seemed wary of that, which is so frustrating.
His overall health, demeanor and looks seem fine, but being the novice "mom" that I am, there is weird almost lattice like patterns on his hair on his rump. I took decent pictures of it this morning, but I don't my my camera cord at work. Could dehydration cause a weird pattern like that? I don't think he's rubbing his flanks against a fence, and no fences on the property have patterns like that.