The Great Backyard Bird Count (GBBC) is a joint partnership between Audubon and the Cornell Lab of Ornithology, with Bird Studies Canada as the official Canadian partner. The GBBC is an annual four-day event that engages birdwatchers of all ages across North America in counting birds to create a real-time snapshot of where the birds are. Anyone can participate, from beginners to experts. You can count for as little as 15 minutes on a single day, or for as long as you like each day of the event. It’s free, fun, and easy – and it helps the birds! Details here.