How many Tweets?

How many Tweets? is an experiment exploring how well people are able to estimate the number of bird species and how many individuals of each species just from audio recordings. The study is trying to develop better ways to monitor bird populations

The experiment should take no longer than 10 minutes to complete.

Please read the following statement and click Take Part Now! if you agree to participate. If you are under the age of 18, a parent or guardian must read the following and give consent on your behalf