August 29, 2014

From billions to none: Remembering the passenger pigeon

Passenger pigeons. 
Photo credit: The Birds of America,
J.B. Chevaller, 1840-1844, n39_21150,
CC-BY-NC-2.0, via Flickr.
They flew in vast flocks, numbering in the billions—the sound from their flapping wings was deafening. John James Audubon once described a flock as one mile wide and 240 miles long that darkened the dome of the sky for three days as it passed overhead.

The passenger pigeon was once the most abundant bird in North America. At the time European settlers arrived, passenger pigeons accounted for nearly forty percent of the land birds of North America, primarily east of the Rocky Mountains. In 1857, the Ohio State Legislature dismissed the idea of protection for the passenger pigeon, proclaiming, “it is here today and elsewhere tomorrow, and no ordinary destruction can lessen them.”

But on September 1, 1914, the last passenger pigeon on Earth perished. In less than a century, the great species had gone extinct.

There are numerous factors that could have contributed to the demise of the passenger pigeon. In the 19th Century, as America’s population grew, the demand for food increased and passenger pigeons were an obvious and plentiful source.

Thousands of men became full-time pigeon hunters. With nesting sites that held unimaginable numbers of birds, hunters slaughtered the birds with ease and efficiency.

One effective technique for wholesale pigeon hunting was to tie one end of a string to the foot of a captured pigeon and the other to the leg of a stool. As the bird tried to fly away, its fluttering wings suggested that it had found food. The rest of the flock, approaching in enormous numbers, was easy to kill. “Stool pigeon” later came to mean anyone who betrays another.

In the mid-19th century, tens of millions of birds were shot for sport. Henry Bergh, the founder of the American Association for the Prevention of Cruelty to Animals, waged a campaign against the brutal treatment of the passenger pigeon. Not only did Bergh write the first legislation attempt to protect the passenger pigeon, but he also helped invent the clay pigeon, which eventually replaced the living bird as a target. Despite efforts by forward-thinking conservationists like Bergh, many protective efforts were overlooked.

In addition to being hunted for food and sport, habitat loss was an important factor in the extinction of the passenger pigeon. As the immigrant population spread rapidly across the country, the bird’s habitat, low-lying areas of nut and beech trees, was converted into farmland.

The end of a species
By the end of the 19th century, only a few thousand passenger pigeons remained in the wild, and the last few were kept in zoos and private collections. On March 24, 1900, a boy in Pike County, Ohio shot the last recorded wild passenger pigeon.

The last survivors of the species, George and Martha, named after the father and first lady of our country, died in the Cincinnati Zoo. George died first, and four years later, on September 1, 1914, Martha died in her cage. Martha’s body, encased in a block of ice, was shipped by train to the Smithsonian’s National Museum of Natural History where her specimen remains today.

Passenger pigeon (Ectopistes migratorius) in the Burke Museum collection.

One of few remaining
The Burke cares for one of the 1,532 passenger pigeon specimens left on earth in our birds collection. Sadly, we know very little about its particular history.

It had to have been collected somewhere east of the Rockies—the species didn’t live this far west—probably in the late 1800s. This bird, however, wasn’t killed for food, but for display. The glass eyes and pink-painted legs tell us it was originally prepared in a lifelike pose, probably perched on a branch. Whether it was a cherished possession, or part of a museum exhibit, or simply stored in a closet, we cannot know.

It was long assumed that the passenger pigeon (center) was most closely related to mourning doves (right) due to similar tail feathers, but with molecular testing it was discovered they are most closely related to the band-tailed pigeons (left) that live in the pine forests of the Western United States.

Eventually this specimen turned up at the Slater Museum in Tacoma where a museum worker carefully modified its lifelike form into a compact “study skin,” which is the typical way museums prepare birds for long-term storage and research.

Then, some 100 years after its unremarkable death, this now remarkably rare bird arrived here at the Burke, where it will remain.

Fold the Flock
You can participate in a world-wide initiative called “Fold the Flock” to symbolically recreate the astounding size of former passenger pigeon flocks by facilitating the creation of one million paper origami birds.

Fold the Flock

Those who want to participate from home can download a free template and record their contribution on the Fold the Flock website. Participants are encouraged to share photos of their creations on social media using #burkeflock #foldtheflock.