The Ancient Polar Climate—and a Giant Bird

If Santa Claus were old enough, a giant bird might have delivered his toys from the Arctic. That's right: researchers at the University of Rochester have discovered fossil evidence of a bird living in the Canadian Arctic about 90 million years ago. They published their findings in Scientific Reports, the online arm of the venerable journal Nature. 

Professor of earth sciences John Tarduno, lead author of the paper, states that his team named the fossil Tingmiatornis arctica after an Inuktikut word for "one who flies." He suggests that the bird would have resembled "a cross between a large seagull and a diving bird like a cormorant"—except that it probably had teeth. No teeth have been found yet, but this bird would have needed them to eat the large, carnivorous fish that lived in the warm waters at that time. 

Wait—warm waters? In the Arctic? You read that right. Dr. Tarduno and his colleagues speculate that the region's climate was rather like that of northern Florida today. So there would have been turtles, fish, and even proto-crocodiles in the food chain.

The T. arctica fossils were found in layers of rock above basalt lava fields. The presence of these lava fields indicates that there was volcanic activity around the time the bird existed. Those Arctic volcanoes would have released plenty of carbon dioxide which, together with methane emissions from large grazing dinosaurs, could have caused a greenhouse effect. So, yes, the weather could have been quite warm.

But what about seasonal ice? Wouldn't there have been ice in winter? Dr. Tarduno says no, because it would have prevented T. arctica from living there. 

 

We here at Talkin' Birds are excited about the find, but we don't plan to take our warm-weather vacations in the Arctic. We hope that 2017 will be a year of action to prevent climate change so that our planet's cold areas stay cold.