This is the more organic of the puzzles. First, down by the stained glass building, there's a little creature. Pretty cute :) You can squash the flower and tent to get him to come out.

Go up the wall near the rock, one 'area' away from that creature. You'll be on a ledge by the third building, which you can't get near. There's a flower here. It's a focussing flower. Point it down to where that creature is, until you can hear him through the flower. You'll notice the plants near you react, and now you have something you can walk across to get to the bird building. You'll need to get in to Saavedro to get the code to get to the book.

This book leads to Edanna. The code is 11:00, 8:00, 5:50, 6:30.

The Myst 3: Exile Walkthrough