More than 1 million penguins discovered on Danger Islands off Antarctica
Antarctica is pretty much the most isolated place on the planet, which is why it's also one of the most fascinating.
Homestretch naturalist Brian Keating just returned from a visit and spoke to Terri Campbell about the exciting new discovery of a 1.5-million strong penguin colony on islands so remote, no one realized the animals were there.
Population in decline?
Prior to the discovery, it was thought that the population of Adelie penguins on Antarctica was in decline.
"There's been about a half degree Celsius temperature rise every decade since 1956," said Keating. "And this has changed the landscape significantly — and changed the population of penguins.
"Ice-loving penguins, like the Adelie penguins, have moved south, and populations that existed in the thousands as recently as a decade ago, are now gone — replaced by other penguins more tolerant to warmer waters and fishing."
Then came the photos, shot from satellites.
"They spotted the poo," said Keating, who traveled with a group of scientists studying penguins and whales in the area.
"Put 1.5 million penguins in a little area, it's going to colour the landscape — and that's what it did."
Drone photos of whales
Researchers used drones to shoot photos of the whales in order to do comparative studies to measure their health.
"If you photograph a whale from above and compare it with its young and you can do a type of analysis, that measures body weight, body fat and fitness," he said.
To study the penguins, one researcher actually used a hand counter.
"Because it's difficult to reach and because they found it on satellite, they decided to send in a ground team to basically confirm what they thought they were seeing," Keating said.
"They counted 751,527 pairs — and they've been around for a long time. They examined satellite photos dating back to 1959 and they believe the colony has been stable over that time, which is in contrast to the other side of the peninsula where I was, Adelie populations have been disappearing and moving south because of the change in ice area.
Impact of discovery
"When you think of the importance of science in these types of discoveries, it can help make important conservation decisions.
With files from The Homestretch
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