The world’s largest-ever flying bird, Pelagornis sandersi is shown in this artist rendering. The gigantic bird had an estimated wingspan of around 21 feet, about the height of a giraffe. (AP Photo/Bruce Museum, Liz Bradford)
When South Carolina construction workers came across the giant, winged fossil at the Charleston airport in 1983, they had to use a backhoe to pull the bird, which lived about 25 million years ago, up from the earth.
But if the bird was actually a brand-new species, researchers faced a big question: Could such a large bird, with a wingspan of 20 to 24 feet, actually get off the ground? After all, the larger the bird, the less likely its wings are able to lift it unaided.
The answer came from Dan Ksepka, paleontologist and science curator at the Bruce Museum in Greenwich, Conn.
He modeled a probable method of flight for the long-extinct bird, named as a new species this week. If Ksepka’s simulations are correct, Pelagornis sandersi would be the largest airborne bird ever discovered.
The big bird relied on the ocean to keep it aloft. Similar in many ways to a modern-day albatross — although with at least twice the wingspan and very different in appearance, Ksepka said — the bird probably needed a lot of help to fly. It had to run downhill into a head wind, catching the air like a hang glider. Once airborne, it relied on air currents rising from the ocean to keep it gliding.
An incredibly efficient glider, Pelagornis sandersi could probably soar for miles and miles over the sea, swooping down to catch its prey in the waves.
To snap up its meals, the bird used pseudo-teeth — a characteristic that Ksepka found just as fascinating as the bird’s massive wingspan. These teeth, Ksepka said, are not anything like our own.
“They don’t have enamel, they don’t grow in sockets, and they aren’t lost and replaced throughout the creature’s life span,” he said. “Instead, the bone just extends from the jaw.”
There were bigger flying creatures than Pelagornis sandersi. Some of the largest pterodactyls had wingspans of up to 35 feet. But they were flying reptiles, not the dinosaurs that birds descended from.
The previous record holder for largest flying bird, Argentavis magnificens, lived only 6 million years ago and hailed from Argentina. It was probably heavier than the new bird — something researchers know because of the size of their hind legs, which had to support their weight.
He added that while it is not possible to know everything about the ancient creature from one skeleton, he is quite certain about one thing:
“This is pushing the boundary of what we know about avian size, and I’m very confident that the wingspan is the largest we’ve seen in a bird capable of flight.”
Reported by RACHEL FELTMAN of The Washington Post
This undated image provided by the Bruce Museum shows a comparative wingspan line drawing of the world’s largest-ever flying bird, Pelagornis sandersi, as identified by Daniel Ksepka, Curator of Science at the Bruce Museum in Greenwich, Conn. At bottom left is a California condor, and at bottom right is a Royal albatross. The giant bird’s skeleton was discovered in 1983 near Charleston, but its first formal description was released Monday, July 7, 2014 by the Proceedings of the National Academy of Sciences. (AP Photo/Bruce Museum, Liz Bradford)