The Great Backyard Bird Count (GBBC) is next weekend, Friday February 16th through Monday the 19th. Participation is free and open to everyone. At a minimum, it only takes 15 minutes of your time. Or you can spend the entire weekend counting in multiple locations. It does not even need to be a backyard. And the rules for counting are really easy: just keep track of the maximum number of any species you see at any given time.