The 117th Christmas Bird Count starts December 14, 2016 and runs through January 5, 2017. This longest running Citizen Science survey in the world provides critical data on population trends. It is organized into circles, and each circle counts as many birds as possible on one day, either on a predetermined route, or at their backyard bird feeder. Data is compiled, and used to learn about long-term bird trends.
If you would like to participate, check out the searchable map to find a counting "circle" near you.
Check out Project WILD’s “Bird Song Survey” for a great activity about the purpose of counting birds for population information.