Wanted to get a jump on this next Quest as the Halloween Quest was driving me batty (get it Halloween Joke) due tot he amount of clicking and Crystals that needed to be turned in.
UOGuide has started an info thread. I went on TC1 to hunt down a Turkey and they are actually challenging:
Search across the land for Giant Turkeys. The lands east and west of Britain are popular. The giant turkeys will be found roaming around harmlessly. However, once attacked, they are very difficult to kill and can pack a punch themselves. They may use a Bleed Attack, teleport unreachable characters next to them and have a giant turkey gobble which will slow even mounted characters to walking speed making escape difficult. They can rip through pets and dispel summons as well.
Defeating one will yield an Ornithologist's Map in the attacking character's backpack leading to a turkey nest. Double-click the map to read it and head to the location depicted on the map, similar to how Treasure Hunters seek treasure chests from treasure maps.