When the plot reaches Archades, from the camp in Giza all Cockatrices run away. Condition is to:
Archades - Agytha:
Domicile of the first Cockatrice - Old Archades. Talk with it.
Second Cockatrice you can find in the center of Archades. To get there you have to collect all Pinewood Chops and exchange them by Chop Master to Sandalwood Chop (The way to collect all Chops is in a chapter about Archades), but after the fight with Cid in Draklor Laboratories.
As soon as you enter this area you will see running Agytha. Crew of imperial soldiers attempt to catch her. Catch up with her - She's running around one pillar so you should cut corners and you will get her. Talk with her and say: "I saw a prin cockatrice in Old Archades". She will give you Tumulus and run at the meeting.
Jahra - Shurry:
Go to Jahra. Everybody congregated and observe something. Take a look what is that. It turns out that it is Cockatrice. Talk to it. Then talk with Garif Herderem standing nearby and say: "It came from Giza Plains". Run to Elder Knoll and talk with Great Chief Ubll-Ka. You will get a gift for Normads in Giza. Bring it back to Garif Herder, Shurry will hit the road and you will get Platinum Dagger.
Eruyt Village - Chit:
At the very end of the village you will meet Mjirn and Chit [screen 1]. Talk with Chit, and next come up to lying nearby Sparkling Light and pick it up. It is Dewdrop Pebble. Talk with Mjirn and pick: "Offer her your Dewdrop Pebbles". Now you have to find 8 more of these trinkets (look at map).
I begin with the closest one:
On the right side of two Vieras sitting
On overgrown with leaves tree's bark
On the tree-trunk near stairs
On the bridge
In blind alley on the weapon stand
In a fountain. First, you have to catch sight of it. Next, talk with Wood-Dweller standing nearby and ask her to get it for you
Among leaves under the stairs
At the end of an empty, blind alley
When you collect all, come back to Mjirn and once again "Offer her your Dewdrop Pebbles". Now, talk with Chit. It will drop another Dewdrop Pebble from it's tail. Talk once again with Mjirn. Chit will recollect everything and hit the return road to Giza and you will get Yoichi Bow.
Rabanastre - Renn:
Take up this Chockatrice not before Chit's come-back to the village.
You will find it in the northernmost part of Rabanastre. Talk to it. It will start to run away. It will be running around this area. You can close to it at a distance. If you close too much it will run faster and just after a while will slow down. Cut corners near clan residence and the shop with gambits but be careful. It can't notice you are before it because it will turn around and start running in opposite direction. You have to close to her from behind.
When you catch it talk with it. It doesn't matter what you will choose. It will tell you its story and back near the place where you meet it. Talk once again with it and pick: "Yes, Actually". After these words Renn will go back to the village and you will get Diamond Sword.
South Bank Village - Sassan:
You will find Sassan in front of one house nearby Gate Crystal in Dalmasca Estersand [screen 1]. Condition is to have already a key to Barheim passage and to sluices in Garamsythe Waterway.
Talk with him. Next, run to talk with Tchigri and tell him that you want to cross the river. He will tell you about Sassan who wants to get on the other bank but he is afraid of wolf which is gamboling in the village: Nathyl. Then a small window appears where you can choose figures to transport through the river. At first pick Nathyl and on the other side pick "No one". Next, choose Arryl, on the other side "No one" and in the end pick Sassan. In northern part of the village run after Sassan to a fireplace [screen 2] and talk with him. After longer moment he decides to come back to a home and you will get Koga Blade.
Balfonheim - Moomer:
Last but not least - Moomer. He thinks he is a Chocobo. You have to convince him that he isn't a good material for being a Chocobo.
Near the exit from Balfonheim to Cerobi Steppe you will see strolling Miffed moogle [screen 1]. Talk with him. Then talk with Chocobo Wrangler sitting by a farm. She will notice your feather. Give it to her for a while: "Show her the Feather of the Flock" [screen 2]. After conversation will come to you that miffed moogle. Talk with him. He will notice Cocatrice and will be thinking it is defective chocobo. Go and talk with Gurdy (the one who rents Chocobo). Moogle will start a journey with Moomer and you will get Defender.
After you recover all Cocatrices go to Giza during rainy season and talk with standing in the farm Terra. For your help you will get 2x Hi-Ether.