One of the two turkeys President Barack Obama pardoned last November didn't live to see his second Thanksgiving.

Peace had served as the understudy to first bird Liberty, in case illness prevented Liberty from participating in last year's White House ceremony. Obama spared both birds, joking that this was one executive action that didn't require congressional approval. They retired to the Mount Vernon estate in Virginia, where Peace died Monday.

"We had to humanely euthanize Peace yesterday afternoon after he became extremely ill over the weekend," Rebecca Aloisi, vice president for marketing at Mount Vernon, said Tuesday. She added that Liberty still "attacks his food bowl with enthusiasm."

Peace's death is untimely but not unusual. The two turkeys Obama pardoned in 2010, Apple and Cider, were both dead by the next Thanksgiving. They developed respiratory infections soon after arriving at Mount Vernon, according to Aloisi, and then a foot disorder that made it hard for them to walk and escalated into joint problems.

Turkeys bred for eating just aren't built to live long, so the presidential pardon is simply an extension on the death sentence carried by birds too fat and big-breasted to reproduce naturally.

While turkeys in the wild grow to about 18 pounds, the demand for 40 million big, juicy birds this time of year has produced a farm-raised turkey of different proportions. When Obama pardoned Liberty and Peace last Thanksgiving, the 19-week-old birds weighed 45 pounds each. They lost some weight after arriving at Mount Vernon, which may have helped keep them mobile, Aloisi said.

Turkeys so fattened for consumption live only a fraction of the 12-year live span of their wild relatives. Peggy Albertson, spokeswoman for the National Turkey Federation, which raises a flock of birds for the presidential pardon each year, said these birds are expected to survive about two years if they don't end up on a Thanksgiving table.

But many, like Peace, don't make it that long.

After President George W. Bush pardoned Stars in 2003, ABC's John Stossel visited Frying Pan Park in Virginia, a previous presidential turkey sanctuary, and found the turkey pen empty. Stossel spoke with farmer Marlo Acock about what happened.

"We usually just find 'em, and they're, they're dead," Acock told me.

Most of the turkeys last only months. One died in one day.

It seems these presidential birds, bred to be eaten, are just too fat to live much longer.

Acock said, "Their flesh has grown so fast and their heart and their bones and their other organs can't catch up."

Frying Pan Park spokeswoman Judy Pedersen confirmed to HuffPost that all the pardoned birds sent there had a "short retirement." From 2005 to 2009, the White House sent pardoned turkeys to Disney World and Disneyland, where more than half of them died within a year of arrival, according to animal rights group Farm Sanctuary.

On Wednesday, Obama will pardon a pair of 19-week-old, 40-pound turkeys, who will then be sent to Mount Vernon to enjoy what life they have left.

Meanwhile, White House chefs are preparing organic birds half that size for the first family's Thanksgiving feast, according to the White House food blog.

UPDATE: PETA will attend the presidential turkey pardoning on Wednesday and hand out free vegan roasts because "Thanksgiving is murder on turkeys." From the group's press release:

Approximately 250 million turkeys are killed in the U.S. every year—more than 45 million for Thanksgiving dinners alone. In nature, turkeys are known to be protective and loving parents as well as fast runners who are able to use reason to outwit their pursuers. But most turkeys slated to be killed for food are crammed into windowless warehouses, where disease, smothering, and heart attacks are common. Turkeys are drugged and bred to grow so large so quickly that their legs are often unable to withstand the weight. Countless birds slowly starve to death within inches of food after they become crippled and are unable to move.

See photos of previous turkey pardons below:

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  • President Ronald Reagan in 1983.

  • President Gerald Ford in 1975.

  • President Richard Nixon receives a Thanksgiving turkey during the annual pardoning ceremony.

  • A pardoned turkey moves to Disneyland.

  • George W. Bush pardons a turkey.

  • President Harry Truman receives a Thanksgiving turkey from members of the Poultry and Egg National Board and other representatives of the turkey industry, outside the White House on Nov. 16, 1949.

  • President John F. Kennedy in 1963.

  • President Barack Obama pardons a turkey.

  • President George H.W. Bush in 1989.

  • Liberty, a 19-week-old, 45-pound turkey, is pictured after it was pardoned by President Barack Obama on Nov. 23, 2011, on the North Portico of the White House.

  • President Barack Obama stands with daughter Malia as daughter Sasha pets Liberty, a 19-week-old, 45-pound turkey, on Nov. 23, 2011, on the North Portico of the White House. At left is National Turkey Federation Chairman Richard Huisinga.

  • President George H.W. Bush in 1991.

  • President Bill Clinton in 1999.

  • President Bill Clinton in 2000.

  • President George W. Bush participates in the annual ceremonial pardoning in the Rose Garden on Nov. 26, 2002.

  • President George W. Bush pardons the Thanksgiving turkey during a Rose Garden ceremony on Nov. 24, 2003.

  • John Kennedy's dog with the Thanksgiving turkey.

  • President George W. Bush and Vice President Dick Cheney participate in the annual pardoning of the turkey in the Rose Garden on Nov. 17, 2004.

  • Dick Cheney looks at a to-be-pardoned turkey.

  • President Barack Obama grants a pardon to Apple on Nov. 24, 2010.