When I was last there, 2002/2003, the Leaf and George rivers herds were estimated at 1.3 million. Now I hear 350k. Wolfs cannot be the sole cause, disease, habitat changes, subsistence hunting and who knows what else. It is a sad story that the greatest wildlife migration in North America had declined 75% in a dozen years and biologist don't know why. In 2002 I watched and filmed upwards of 12,000 caribou stream through our camp in a two day span. I'll never forget it. I chased caribou on foot just for the fun of running with them. I stood beside a tree where they came out of a river crossing and tried to touch them as they passed within three feet of me. Got wet when they shook off like a dog. One of my top three outdoor experiences.