Follow the trails through the marsh.
Click on the red asterisks as you reach them.
You will be shown the picture of a bird, with 4 choices as to what it is.
Before you click on the link to the answer, guess what kind of bird it is.
If you're not sure what it is, pick an alternate bird.
Click on the answer link. You get 2 points if your first guess was right, 1 point if your second guess was right. Keep track of your score and try to improve on it next time.
There will be a link to bring you back to the marsh.