The GBBC is a global bird count, during which thousands of birdwatchers look for birds for four days in February each year. It’s great fun; and it helps create a snapshot of where birds are. In 2015, birders from over 100 countries reported 5,090 bird species while uploading nearly 150,000 birdlists.
In India, we have been marking the GBBC since 2013, and participation has grown in leaps and bounds.
Links to events from previous years (with results) are listed below:
And here is the global website of the Great Backyard Bird Count.