APR 03, 2016 11:58 AM PDT

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

WRITTEN BY: Anthony Bouchard

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
JUL 11, 2020
Earth & The Environment
The disappearance of Australia's seagrass
JUL 11, 2020
The disappearance of Australia's seagrass
Australia is losing its seagrass. That’s according to a new report released by marine scientists at the Centre for ...
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 31, 2020
Plants & Animals
This Fungus Spreads by Manipulating Male Cicadas into Mimicking Females
JUL 31, 2020
This Fungus Spreads by Manipulating Male Cicadas into Mimicking Females
Researchers from West Virginia University (WVU) recently discovered how a parasitic fungus uses male cicadas to spread i ...
AUG 20, 2020
Plants & Animals
Honoring World Mosquito Day
AUG 20, 2020
Honoring World Mosquito Day
August 20th, 2020 is World Mosquito Day. Why celebrate an animal dubbed as one of the “world’s deadliest&rdq ...
SEP 10, 2020
Plants & Animals
Scientists Document Swimming Styles of Sea Butterflies
SEP 10, 2020
Scientists Document Swimming Styles of Sea Butterflies
Snails, marine and terrestrial, are likely primarily imagined to be attached to a substrate. However, under the waves, t ...
SEP 14, 2020
Plants & Animals
Preserving the Avocado
SEP 14, 2020
Preserving the Avocado
Rest easy, chips-and-dip lovers, the world's guacamole supply has been secured for future generations.
Loading Comments...