Mechanical Chicken - Item - World of Warcraft
So here's the deal. These chickens can sell anywhere from 1,000g to 2,000g and can be pretty easy to get. This requires a level 55.
Step one - this is the longest step: complete the DK starting zone chain quest. This should only take around two hours straight play.
Next have a friend summon you to these locations, or hike your ass out there:
Hinterlands
Tanaris
Feralas
In each zone you need to get the OOX Distress beacon, and escort the chicken to safety. I'd recommend:
Tanaris: Farming ZF
Hinterlands: Clearing out Jintha'Alor
Feralas: Clearing out the High Wilderness
After completing each chicken escort quest, you can complete the quest "An OOX of your own" where upon completing you will get your mechanical chicken. From here, you can mail the chicken to your main/bank - sell it - profit - delete DK - start over again.
This is a bit time consuming, and can require a bit of luck on the beacons, but due to the recent 75 vanity pet achievement, these chickens sell very well. Hope someone finds this useful =)