Camouflage

Teddy Roosevelt Weighs in on the Evolution of Camouflage

In the years after his presidency, Roosevelt sent a letter to The Condor magazine criticizing painter Abbott Thayer's theory of animal camouflage.

Christmas Bird Count and Citizen Science Through The Years

The Christmas Bird Count is upon us! From Dec. 14 until Jan. 5, birders of all stripes will be participating in a long-running "citizen science" project.

Passengers Long Gone

Martha, last of the passenger pigeons.