How many people bird watch?

Birdwatching (also known as birding) is a popular pastime around the world. According to a study conducted by the U.S. Fish and Wildlife Service in 2016, there were an estimated 45 million birdwatchers in the United States alone, and about 10-20 million in the UK. Globally, it is estimated that there are over 100 million birdwatchers, making it a significant recreational activity.