Thanks for this -- this is the most interesting aspect of this entire thread.
This information is further reinforced in an article in today's edition of the Washington Post. The article examines the rapid spread of coyotes across this country and into other parts of the continent. Fascinating stuff.
So the story of coyote migration is also the story of the loss of the wolf.
I have read a wonderful mixed media web article on the impact of the return of apex predators to Yellowstone NP. I think it was in National Geographic.
I found these link just now but never is the article I remember reading.