How to start
Start by clicking on one of the four main bird observation categories. A set of related second-level symbols will appear beneath the category you have chosen. Click on one of these, and a set of third-level symbols will appear. Activate one of these symbols by clicking on it, and images of birds that have this characteristic will appear on the right.
You may also click on two or more third-level symbols if you are not sure which alternative corresponds best to your observation. This makes it more probable that the bird you observed is among the birds illustrated, but the number of birds illustrated will be greater.
Main bird observation categories