A New Way to Tell If a Dead Duck Could Fly

Watanabe. 2017. The Auk: Ornithological Advances.
Watanabe. 2017. The Auk: Ornithological Advances.

As any toddler chasing pigeons in the park knows, it’s not hard to figure out which birds can fly and which can’t. Sorting the flighted from the flightless is a little harder when those birds are dead—and even harder when they’re extinct. Now one fossil expert has developed a system that may help. He published his findings in The Auk: Ornithological Advances.

Junya Watanabe studies paleontology, evolutionary biology, geology, and mineralogy at Kyoto University. His research into the evolutionary history of birds has brought him up close with the anatids, a large family that includes ducks, geese, and swans. Today, most of these birds are happily flapping around, but that may not have always been the case.

Experts have found more than 15 fossilized anatid species that would have been unable to fly. We think. We’re not sure, because until now, we haven’t really had a good way of sussing out what flying looks like in animals that have been gone for millions of years.

To look back into the past, Watanabe started in the present. He took precise measurements of 787 different modern anatids from 103 different species—some volant (flighted), some flightless—focusing on their legs, wings, and breastbones. Then he fed those stats into an algorithm that compared the proportions of each bird’s body with its flying ability.

Fossilized bones from Chenonetta finschi.
Junya Watanabe

Fossilized bones from Anas marecula.
Junya Watanabe

The results showed physically tiny but evolutionarily significant differences between the species that could fly and those that couldn’t. Like the doomed dodos of yore, today’s flightless birds generally have chunkier legs and smaller wings than their airborne cousins.

By using the same algorithm on 16 species of fossilized anatids, Watanabe could easily spot which birds might have flown, long ago. His results confirmed other scientists’ suspicions about birds like Ptaiochen pao, whose name derives from the Greek and Hawaiian words for “destroyed stumbling goose.”

Helen James is curator of birds at the Smithsonian Institution’s National Museum of Natural History. She said Watanabe’s new system will be especially helpful in cases where only part of a fossilized bird has been found.

“Other researchers will appreciate that he offers a way to assess limb proportions even in fossil species where the bones of individual birds have become disassociated from each other,” she said in a statement. “Disassociation of skeletons in fossil sites has been a persistent barrier to these types of sophisticated statistical analyses, and Dr. Watanabe has taken an important step towards overcoming that problem.”

People Have Been Dining on Caviar Since the Stone Age

iStock.com/Lisovskaya
iStock.com/Lisovskaya

Millennia before caviar became a staple hors d'oeuvre at posh parties, it was eaten from clay pots by Stone Age humans. That's the takeaway of a new study published in the journal PLOS One. As Smithsonian reports, traces of cooked fish roe recovered from an archeological site in Germany show just how far back the history of the dish goes.

For the study, researchers from Germany conducted a protein analysis of charred food remains caked to the shards of an Stone Age clay cooking vessel. After isolating roughly 300 proteins and comparing them to that of boiled fresh fish roe and tissue, they were able to the identify the food scraps as carp roe, or eggs. The scientists write that the 4000 BCE-era hunter-gatherers likely cooked the fish roe in a pot of water or fish broth heated by embers, and covered the pot with leaves to contain the heat or add additional flavor.

The clay shards were recovered from Friesack 4 in Brandenburg, Germany, a Stone Age archaeological site that has revealed about 150,000 artifacts, including items crafted from antlers, wood, and bone, since it was discovered in the 1930s. In the same study, the researchers report that they also found remnants of bone-in pork on a vessel recovered from the same site.

Other archaeological digs have shown that some of the foods we think of as modern delicacies have been around for thousands of years, including cheese, salad dressing, and bone broth. The same goes for beverages: Recently a 13,000-year-old brewery was uncovered in the Middle East.

[h/t Smithsonian]

Dozens of Cat Mummies, Plus 100 Cat Statues, Discovered in 4500-Year-Old Egyptian Tomb

iStock.com/Murat İnan
iStock.com/Murat İnan

The mummification of cats was a common practice in ancient Egypt, but it’s always a pleasant surprise when the felines are found thousands of years later. As NPR reports, dozens of mummified cats and 100 wooden cat statues were recently discovered in a 4500-year-old tomb near Cairo.

These items were uncovered by Egyptian archaeologists while excavating a newly discovered tomb in Saqqara, whose necropolis served the ancient city of Memphis. Another nearby tomb remains sealed, and it’s possible that it may have evaded looters and remained untouched for millennia.

In addition to the wooden statues, one bronze cat statue was found. It was dedicated to Bastet, goddess of cats, who was said to be the daughter of Re, god of the Sun. While cats were revered by ancient Egyptians, they weren’t directly worshipped. Rather, gods like Bastet were often depicted with the physical characteristics of an animal that was considered divine.

Even rarer than the mummified cats were a couple collections of mummified scarab beetles that were found in the tomb—the first of their kind to be unearthed in this particular necropolis, Egypt's Ministry of Antiquities announced in a Facebook post. The scarabs were still in “very good condition” because they had been wrapped in linen and placed inside two limestone sarcophagi, whose lids had black scarabs painted on top.

"The (mummified) scarab is something really unique. It is something really a bit rare," Mostafa Waziri, secretary general of Egypt's Supreme Council of Antiquities, told Reuters and other media. "A couple of days ago, when we discovered those coffins, they were sealed coffins with drawings of scarabs. I never heard about them before."

The beetles were an important religious symbol in ancient Egypt, representing renewal and rebirth. The Ministry of Antiquities said archaeologists also found wooden statues of a lion, a cow, and a falcon, as well as painted wooden sarcophagi of cobras (with mummies inside) and wooden sarcophagi of crocodiles.

[h/t NPR]

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