An unusual bird feather has been found. See if there are more.
This quest appears in Hunting Grounds - West in the middle of the map. There will be a Mabari barking up at a tree.
There are a total of three feathers you need to find.
1. Hunting Grounds - West - In the middle of the map where a Mabari is barking up a tree.
2. Chateau Haine - On the left chest in the Gate puzzle room.
3. The Retreat - Right once you enter through the Crack in the Wall
Once the third feather has been found a treasure cache will be marked on the map. Its location is found in the Mountainside Path after you first encounter the Tal-Vashoth Leader (if you went with Tallis).
+(1.6 + 1.6 * LVL) health
+(0.8 + 0.8 * LVL) mana/stamina
+2 health regeneration rate
pcps3xbox360 the Arcane Feather at the Gate puzzle room might not be obtainable (can't select it). If it's not sparkling to show you can pick it up then you have Hawke stand on the tile in front of the left chest, and Tallis standing on the other tile in front of the right chest, this should unlock the exit AND the chest so you can pick up the feather.
Solution: I found this walkthrough and it works perfectly
As the game itself points out, the trick here is to switch between Hawke and Tallis. Start by having each of them stand on the tiles directly in front of you, next to the red carpet. Move them one at a time up the side steps and onto each successive tile switch. Alternate characters until you reach the end, then push the statues down onto the switches.
Now have Tallis stand on the switch closest to the steps (but still on the second floor) so that Hawke can move past the gate. Have Hawke stand on the right/south switch so that Tallis can come back down the stairs. Now move both characters to the well-lit switches on either side of the vault door.
If your companions have personal quest items here, they will be marked with plot points on your map. If you don't see any (or don't care) you can continue right away. Otherwise, move both characters to the original two tiles to once again lift the grate barring the steps. Move Tallis upstairs on either side, and move Hawke to the available switch between the columns. Walk forward with Tallis onto the next switch, and swap to Hawke and do the same.
Once Hawke is standing on the switch in front of the chest, you can move Tallis back to the main floor. Repeat these instructions for the opposite side.
Move both characters until they're standing in front of both chests.
- NOTE: There is a glitch here. The game will prevent you from picking up the
personal quest items unless BOTH CHARACTERS are standing on the switches in front of the chests. If you find yourself unable to "click" on the items, double check that Hawke and Tallis are actually on the switches. **