MAY 05, 2017 9:34 AM PDT

Scientists Are Now Counting Birds From Space

WRITTEN BY: Anthony Bouchard

Keeping an accurate headcount of the endangered Northern Royal Albatross is somewhat of an important venture for scientists based out of New Zealand, but it's not easy because their natural habitat is difficult to access.

The albatross is one of the world's largest flying birds.

Image Credit: PublicDomainPictures/Pixabay

History has proven that headcounts on land can be inaccurate or miss important details, and to fix that, we’re beginning to work towards a future of ‘eye-in-the-sky’ headcounts. Most of these are performed by flying drones or airplanes, which don’t disturb the natural habitat of the creatures, but another way we can do this is by way of satellite imagery.

Published in the journal Ibis, a study described how high-resolution imagery can be used to accurately measure the population of a species on a global scale. The images, which were taken by the DigitalGlobe WorldView-3 Satellite are so detailed that individual birds can be counted in the photographs.

Importantly, this was the first time an entire animal species has been surveyed on a global scale from outer space, which is a big milestone since governments have only recently allowed such high-resolution space imagery to be accessible by non-military entities.

In these photographs, you’ll see numerous small white dots popping out from the dark background that are only a couple of pixels wide, but each of these white dots just happens to be an albatross in the region.

Image Credit: DigitalGlobe

According to the study, as many as 3,600 albatross nests were counted, which is reportedly down from a ground-based headcount performed almost two decades ago.

Related: Albatross chicks are in danger from tsunamis and rising seas

"The breeding numbers we counted were much lower than we anticipated, which could show us that the population is declining or it could show just that we had a particularly poor year. But this illustrates why you have to do this over several years, and doing it by satellite is going be a lot cheaper and more efficient," study lead author Dr Peter Fretwell said in a statement.

You might be wondering how scientists can tell one white speck from another, and how this translates to accurate information regarding albatrosses when many bird species are white, but it turns out there’s a way to get around that obstacle.

Scientists are already well aware of where these birds like to nest, so naturally, we already know where to look. It’s just a matter of keeping track of them and their movements so they don’t get mixed up with other birds.

Because their habitat in the Chatham islands is particularly difficult to get to, this satellite imagery gives scientists a break from hiking and rock climbing and lets them continue to do their work by studying from up above.

Related: How albatrosses are able to fly despite their huge bodies

Scientists used to have so much trouble venturing out to get to the creatures’ natural habitat, so the technology being used to count these creatures from space helps to save effort, funds, and time.

Source: BBC, The Independent

About the Author
  • Fascinated by scientific discoveries and media, Anthony found his way here at LabRoots, where he would be able to dabble in the two. Anthony is a technology junkie that has vast experience in computer systems and automobile mechanics, as opposite as those sound.
You May Also Like
JUL 20, 2020
Earth & The Environment
Ectotherm thermal physiology puts amphibians at even greater climate risk than previously recognized
JUL 20, 2020
Ectotherm thermal physiology puts amphibians at even greater climate risk than previously recognized
Things aren’t looking good for amphibians. According to new research published in Global Change Biology from Simon ...
JUL 23, 2020
Plants & Animals
Groups Led by Dominant Males Are Less Cooperative
JUL 23, 2020
Groups Led by Dominant Males Are Less Cooperative
When aggressive males led groups of fish in a complex task, those fish did poorly on the task compared to groups led by ...
AUG 26, 2020
Space & Astronomy
Is a Supernova to Blame for the Devonian Extinction Event?
AUG 26, 2020
Is a Supernova to Blame for the Devonian Extinction Event?
Over the roughly 4.5 billion years of Earth's existence, there have been several periods were biodiversity has been near ...
SEP 08, 2020
Plants & Animals
At Least 11 Species of Fish That Can Walk Are Identified
SEP 08, 2020
At Least 11 Species of Fish That Can Walk Are Identified
Using an evolutionary map and CT (computed tomography) scans, an international team of researchers has identified eleven ...
SEP 17, 2020
Genetics & Genomics
Revealing More About the Past With a New Metagenomic Technique
SEP 17, 2020
Revealing More About the Past With a New Metagenomic Technique
Scientists can use advanced genomics techniques to mine samples for all the genetic material they contain.
NOV 24, 2020
Genetics & Genomics
Cracking the Code of a Locust Swarm
NOV 24, 2020
Cracking the Code of a Locust Swarm
With a reputation for destruction that goes back to ancient Egypt, locust swarms are once again a major problem for some ...
Loading Comments...