George Will, please, check this out:
According to the Audubon Society, data from the past 40 years of the annual Christmas Bird Count — a three-week census of American bird populations — shows a striking northward movement among a majority of species. This is not just a movement of individuals. It’s the migration of an entire population.
The boreal chickadee has moved 280 miles north, almost out of the range of the lower 48 states. The marbled murrelet, a seabird that breeds inland, has moved 360 miles north. The wild turkey has gone about 400.
Climate change just a speculative, fanciful theory? You're a numbskull, literally. Why don't you join Sam Donaldson in retirement!