I started feeding protein a couple years ago. I was feeding only corn beforehand. Since protein started, I have seen my herd double, and just last week, it doubled again. Of course I didn't grow them from protein, they were already there, but they're coming in for something, maybe the protein. I've always had a group of tan WT that I have seen for years and watched the bambis grow up, it has grown to about 25 or so, but in the past several days, I have a huge herd of dark, almost black bodied WT coming in too.
It's interesting that they don't travel together, but when they show up at the same time, it's like a family reunion.