On your first visit to a Chocobo Forest, you meet Chocoboy; he will teach you how to catch a Chocobo and give you a device called a ChocoWhis for 1,000 Gil.
The ChocoWhis has 2 modes, ChocoSonar and ChocoZiner:
- The ChocoSonar sounds a ping noise and it gets louder when you are near the right spot (there is also a guage in the lower right to give a visual representation).
- The ChocoZiner causes Chicobo's to move either down or up.
If you use the ChocoZiner in the wrong place, a Chicobo will come down and steal the ChocoWhis. You can talk to Chocoboy to get a new one, but at a cost of 700 Gil.
Your goal in the Chocobo Forest is to solve a puzzle that leaves only 1 Chicobo remaining and that will summon a Chocobo.