Emily Chan
A scientist was searching satellites for signs of unreported emperor penguin colonies in Antarctica when he made a shocking discovery.
Thanks to trails of poop smears spotted from space, a total of four previously undiscovered emperor penguin colonies were identified. This brings the overall number of breeding colonies for the species to 66.
According to Peter Fretwell, a study author and a scientist at the British Antarctic Survey, the finding was important because it helped place the distribution and locations of the colonies, which, in turn, will help researchers observe how the penguins adapt to climate change.
Fretwell combined data collected between 2018 and 2022 by the Maxar Worldview-2 satellite and the Sentinel-2 satellite from the European Space Agency.
The brown smears of the penguins’ excrement could be seen even all the way from space. It is likely that the colonies Fretwell found have existed for years.
The groups were mostly small, with each having less than 1,000 breeding pairs. A few of the colonies were close to already-established penguin hotspots.
One of the newly discovered colonies was located on the coast of Marie Byrd Land in West Antarctica, around 31 miles from an abandoned Russian research facility. During its time in operation, the facility never had any official records of emperor penguin sightings.
Another new colony site was on the northern side of the Lazarev Ice Shelf. A larger colony had once been reported there but was declared extinct in 2019.
“It seems highly probable that the newly reported is a movement of the old Lazarev colony, possibly due to the extension of the ice tongue or a change in sea-ice conditions,” said Fretwell.
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