It’s hard to imagine a world where we don’t wake up every morning to the sound of birds chirping. But due to many environmental factors — ones we’ve caused, no doubt — their populations are in peril. The Messenger , a documentary screening in St. Pete, explores the beauty of these birds as well as the things humans are doing (however unwittingly) that are causing their numbers to drop. It features stunning visuals that will compel you to never again take for granted those songs you hear each morning. The Audubon Society is cosponsoring the screening. 6:30 p.m., [email protected], 620 First Ave. S., St. Petersburg, 727-895-6620, thestudioat620.org.