For nearly 40 years, a dedicated team of researchers and volunteers has been taking the measurements of thousands of birds that have collided with buildings in Chicago, Illinois—and they found a surprising trend. (source: sciencemag.org)
For nearly 40 years, a dedicated team of researchers and volunteers has been taking the measurements of thousands of birds that have collided with buildings in Chicago, Illinois—and they found a surprising trend. (source: sciencemag.org)