APR 03, 2016 11:58 AM PDT

Study Finds Little Birds Have Rapid, But Not Very Clear, Vision

When people think of birds, one of the main things that comes to mind is their eyesight. Many birds have sharp vision; especially those that glide at extreme heights as predators and swoop down to catch their prey, but a new study finds that not all birds are like that.
 
Smaller birds, such as the blue tit, collared flycatcher, and pied flycatcher, may not have as sharp of vision as their cousins, but their eyesight may compensate for lack of sharpness with speed.
 

The blue tit is one of the species of birds used in the research to learn more about birds' eyesight.


A study published in the journal PLOS ONE suggests that smaller birds may have eyesight that is up to two times zippier than that of a human’s eyesight, but that the sharpness of their eyesight may not be as sharp as once thought. As a result, birds can identify more details about an environment in time space much more quickly.
 
In this respect, these species of birds are able to spot movements and recognize them much more efficiently than humans, which gives them the upper hand in escaping predators. On the other hand, they don’t necessarily have the ability to identify what exactly the predator is because they don’t spend a whole lot of time focusing on it to get a clear enough image.
 
In the study, the researchers measured the birds’ temporal resolution by using a lamp flicker rate to measure how much the birds were able to distinguish apart from one another.
 
As the flicker rate was increased, scientists were able to start looking for patterns of when the birds were unable to distinguish them apart – at this point, the temporal resolution maxes out and the scientists get their numbers.
 
The findings show that smaller birds are efficient at identifying things in shorter periods of time, whether their vision is blurry or not. Nevertheless, they don't necessarily have as clear of eyesight as humans.
 
“Fast vision may, in fact, be a more typical feature of birds in general than visual acuity,” said lead researcher Anders Ödeen. “Only birds of prey seem to have the ability to see in extremely sharp focus.”
 
So do birds see better than humans? – It really depends in what context you choose to talk about. For some species, their visuals may not be as clear, but their ability to perceive time space more quickly make them more effective at identifying things more quickly.

Source: EurekAlert via Headlines & Global News

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
SEP 16, 2019
Plants & Animals
SEP 16, 2019
Researchers Discover Two New Frog Species in Ecuador
It seems like newly-discovered animal species are being described and named in scientific journals on a regular basis. With that in mind, it shouldn’...
SEP 16, 2019
Plants & Animals
SEP 16, 2019
This Endangered Penguin Will Get a Second Chance at Walking
While most people are familiar with the penguins that reside in colder climates, some species, such as the African penguin, are temperate, which means that...
SEP 16, 2019
Genetics & Genomics
SEP 16, 2019
Genetics, not Environment, Primarily Shapes Microbiome
Environmental factors are typically believed to have a heavy influence on the microbiome. Although these factors certainly do have an impact, research has ...
SEP 16, 2019
Chemistry & Physics
SEP 16, 2019
Irish Teen Removes Microplastics From Water, Wins Google Science Fair
A new invention that removes microplastics from water was designed by 18-year-old Fionn Ferreira -- winner of the Google Science Fair....
SEP 16, 2019
Cell & Molecular Biology
SEP 16, 2019
How the Kava Plant Creates Medicinal Compounds
Nature has given us some of our best medicines; it's thought that as many as half the drugs we used are derived from natural products....
SEP 16, 2019
Earth & The Environment
SEP 16, 2019
Massive Phytoplankton Bloom Resulted from Kilauea's Eruption
The 2018 eruption of Hawaii’s Kilauea Volcano didn’t just change the lives of several hundred residents and the local landscape. It also had sh...
Loading Comments...