Tags
When it comes to global warming, the canary in the coal mine isn’t a canary at all. It’s a purple finch.
As the temperature across the U.S. has gotten warmer, the purple finch has been spending its winters more than 400 miles farther north than it used to.
And it’s not alone.
Audubon seems to be the source of the SF Gate report, with images of many of the birds, and miles shifted north.