A Knysna Turaco (Tauraco corythaix) in South Africa. (Credit: Daniel J. Field)

Many of the birds we see only in the tropics today once lived as far north as Canada and Russia. A warmer climate millions of years ago gave them free reign over more northern habitats, before gradual climatic shifts pushed them southwards, a new study shows.

Now, the climate is
changing again, but birds may not be able to adapt fast enough this time
around.

“We’ve illustrated the extent to which suitabl