"I took a brief walk out from the lab during an enzyme incubation and checked out the small wetland north of the music building on the IU campus," reported Steve Bell, professor of biology and expert birder, on a local birding Facebook page. "It was absolutely crawling with birds, Swainson's and Grey-cheeked Thrush and 10 warbler species including Wilson's and Mourning. Amazing to have this sort of habitat a 4-minute walk from my workplace."
According to ebird.org, an online database of bird observations managed by The Cornell Lab of Ornithology, 136 species of birds have been documented on the IU Bloomington campus since 2009.
Although the campus provides good habitat for birds, many dangers are also present—including bird-building collisions. Crashing into windows is a primary cause of bird mortality. It is estimated that window strikes kill as many as 1 billion birds per year in the U.S. and Canada. These deaths are nondiscriminatory; window strikes kill otherwise healthy birds. Nighttime lighting in buildings poses an additional threat. Artificial light at night can disorient birds, especially during migration. It can also attract them, leading to avian window strikes with often fatal results.