Shamans.
“Look, he said he knows where all the fruit bearing trees in this forest are. Not a lot of them, all of them. He pointed out a squirrel the other day and told it he was glad to see that it made it through the winter. I don’t know how he does it, but if he says we have to move because the squirrels are starting to move to new trees, who am I to argue? We move.”
Well, all the top contenders are being defenestrated, and that evolutionary pressure is creating a new niche that will be filled by some kind of smart, quiet, and patient opportunist. Maybe.