Thursday, November 23, 2023

Cohabitating With Cassowaries

 From Smithsonian:

The southern cassowary is an enormous, flightless bird native to the forests of New Guinea and Northern Australia. The dinosaur-like creature has glossy, jet-black feathers and a bright blue neck with a vibrant scarlet wattle dangling from its neck. They also have three-toed, razor-sharp talons that can inflict severe fatal injuries with a roundhouse kick when provoked, earning them the title "world's deadliest bird," reports Asher Elbein for the New York Times.

While one should certainly be wary around a cassowary and its dagger-like claws today, a new study found that humans may have raised the territorial, aggressive birds 18,000 years ago in New Guinea, making them the earliest bird reared by our ancient ancestors, reports Katie Hunt for CNN. The research was published on September 27 in the Proceedings of the National Academy of Sciences.

"This behavior that we are seeing is coming thousands of years before the domestication of the chicken," says study author Kristina Douglass, a Penn State archaeologist, in a statement. "And this is not some small fowl, it is a huge, ornery, flightless bird that can eviscerate you. Most likely the dwarf variety that weighs 20 kilos (44 pounds)."

Researchers excavating two rock shelters in New Guinea found 1,000 fragments of fossilized cassowary eggshells. To get a closer look at the ancient shell pieces, the team used three-dimensional imaging, computer modeling, and studied egg morphology of modern cassowary eggs and other birds, like emus and ostriches. Using carbon dating, the eggs are estimated to be 6,000 to 18,000 years old. For comparison, chicken domestication occurred no earlier than 9,500 years ago, per CNN. (Read more.)

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