This video from the USA is called The Great Backyard Bird Count 2013.
From the Cornell Lab of Ornithology in the USA:
You’re Invited to the Great Backyard Bird Count
Please consider taking part in the 16th annual Great Backyard Bird Count (GBBC) February 15-18. The count is being integrated with the eBird online checklist system—which means that the count will be global for the first time. Anyone, anywhere, with Internet access can take part in the count. [If] you already participate in NestWatch, then you will not need to create a new account for the GBBC. If you’re watching birds that weekend, simply enter your checklists at www.birdcount.org. You’ll be prompted to enter your existing login information.
Participating is easy. Simply watch birds for at least 15 minutes at the location(s) of your choice on one or more of the count days. Estimate the number of birds you see for each species you can identify. You’ll select your location on a map, answer a few questions, enter your tallies, and then submit your data to share your sightings with others around the world.
Please consider participating in this free, fun, late-winter bird count!
Thank you for your contributions to science and the birds!
Jason Martin, Project Leader
Robyn Bailey, NestWatch Assistant
See also here.