I’ve got a new post up at 10,000 Birds on a study looking at changing populations of several hundred common species of birds in Europe and North America (mainly the US).

The two subcontinents exhibit dramatically different patterns, as shown in the enigmatic graph above.

Go to the post to unravel this intriguing mystery!

Comments

  1. #1 Kevin O'Neill
    not quite in the sand counties
    May 17, 2016