Triforce Chart 2 (GameCube: Triforce Chart 3) (G-5) / Triforce Shard 3 (C-5)

Sail to G-5: Bird's Peak Rock. Make sure you bring some Pears along as you can only solve this puzzle with the help of a seagull. Climb onto the southeastern part of this rocky island and use your Grappling Hook to pull yourself up (hold R and climb) on top of the plateau above the locked door.

Shoot down as many Kargoroks as you can from here. Use standard or Fire Arrows?(Fire Arrows have the added benefit that the explosions may trigger the switches, saving you some time).

Next, use a Hyoi Pear to call a seagull. Fly up the rock pillars and fly into each and every crystal switch you see. Beware of remaining enemy Kargoroks. Fly wide circles so that you don't bump into them. Remember, there is no pause button. Don't accidentally switch back to Link before you have accomplished your mission. When all switches are set to yellow, the gate underneath Link will open. In case you're low, the easiest place to get Hyoi Pears is from Beedle's Outset Island shop ship.

Stand on the Triforce tile and play the Wind's Requiem. The treasure chest containing Triforce Chart 2 (Wii U version) or Triforce Chart 3 (GameCube version) will appear right in front of you.

Warp to Tingle Island and have the map translated, then sail to C-5: Stone Watcher Island.

Use your crane to reel in the third Triforce Shard to the northwest of the small island.

Video Walkthrough: Triforce Shard 3