The turkey might make an appearance at Christmas, and stops by to visit once in a while during the year, but he always shows up for Thanksgiving.  Was it because turkey was served at the first Thanksgiving or is that a myth too?  How turkey became tied to Thanksgiving is still a bit of a question. but there are a few different theories.

According to Wonderoplis, letters and records kept by early American settlers tell us that when the colonists sat down to dine with the Wampanoag Indians, beef and fowl were on the menu.  While we don't know exactly which types of fowl were served, a letter by one of the pilgrims mentions a turkey hunting trip before the meal.

Another theory attributes the Thanksgiving turkey to the Queen Elizabeth of England. The story says during the 16th century, a fleet of Spanish ships sunk on their way to attack England.  When the Queen received this news she was eating dinner and was so thrilled that she ordered another goose be served. Some historians say the early settlers were inspired by the queen's actions and roasted a turkey instead of a goose.

No matter how they ended up on our Thanksgiving table, we certainly are "Thankful" they did.