The Great Backyard Bird Count (GBBC) is a free, fun, and easy event that engages bird watchers of all ages in counting birds to create a real-time snapshot of bird populations. Participants are asked to count birds for as little as 15 minutes on one or more days of the four-day event and report their sightings online at birdcount.org. Anyone can take part in the GBBC, from beginning bird watchers to experts. Participate from a backyard or anywhere in the world. The 21st annual Great Backyard Bird Count is Feb. 16, through Feb. 19. Visit birdcount.org for more information.