Cattle won’t touch another cows calf. We used to skin a calf if it died and tie the “hide” on the orphan. That usually did the trick. I’m surprised to hear an elk cow will pick up an orphan calf.
How is it "ridiculously stupid"? What's your reasoning there? Or is it just emotional?What I will NEVER do is shoot a fawn or a calf. I find that to be ridiculously ststupid.
Color. The dry cows will be a slightly different tint. A bit 'gray-er/blue-er' than the wet ones. It gets easier to tell by color, if the sun is direct on them. The bulls will look almost white, the cows more tan/brown. Even bull calves are easy to tell from heifer calves, if you can see them all together, to compare....What do you look for to determine if the cow elk is dry besides not having a calf by her side?