Monday, May 20, 2019
Contact us    |    Advertise    |   Help    |   Cookie Policy    |   Privacy Policy    RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Extinct bird evolved itself back in to existence


Posted on Friday, 10 May, 2019 | Comment icon 5 comments

Extinction doesn't necessarily have to be permanent. Image Credit: CC BY-SA 4.0 Charles J Sharp
Researchers have identified a species of bird that went extinct, then evolved again from the same lineage.
The remarkable discovery is an example of a rare phenomenon known as iterative evolution in which two or more practically identical species can independently evolve from the same ancestral lineage.

In this particular case, a flightless bird known as the Aldabra white-throated rail went extinct 136,000 years ago and then incredibly evolved itself back in to existence several millennia later.

This rarely-observed feat is made all the more impressive due to the fact that the new iteration of the species re-evolved on the Aldabra Atoll in the Seychelles Islands - the very same atoll from which the original iteration was wiped out tens of thousands of years earlier when it was swallowed by the sea.

"We know of no other example in rails, or of birds in general, that demonstrates this phenomenon so evidently," said study co-author David Martill, a palaeobiologist from the University of Portsmouth.

"Only on Aldabra, which has the oldest palaeontological record of any oceanic island within the Indian Ocean region, is fossil evidence available that demonstrates the effects of changing sea levels on extinction and recolonization events."

Source: Vice.com | Comments (5)

Tags: Bird, Extinction

Recent comments on this story
Comment icon #1 Posted by Not A Rockstar on 10 May, 2019, 1:35
Wonder why flightlessness is desirable then, as an evolutional eventuality in both cases.
Comment icon #2 Posted by Seti42 on 10 May, 2019, 23:30
That's really fascinating stuff. I wonder if environmental change had something to do with it?
Comment icon #3 Posted by Seti42 on 10 May, 2019, 23:31
My guess? I'd say that it has a lot to do with energy economy. Flight takes a lot of energy. If the bird can successfully find food and mates without having to fly, the ability to fly goes away.
Comment icon #4 Posted by Harte on 11 May, 2019, 11:30
Maybe it's more of a case of it becoming less undesirable. To the point that it becomes survivable. The absence of predators allows those born flightless to survive to reproduce. Eventually, it makes no difference whether you can fly or not and you don't try - for energy reasons as stated. Harte
Comment icon #5 Posted by Not Your Huckleberry on 11 May, 2019, 12:51
Hearing about a species making a comeback never fails to brighten my day.


Please Login or Register to post a comment.


  On the forums
NASA celebrates 50th anniversary of Apollo 10
5-19-2019
50 years ago, the Apollo 10 crew flew within 9 miles of the Moon's surface a mere two months before Apollo 11.
Human-like figure floats eerily over California
5-19-2019
Peculiar video footage has emerged showing a vaguely humanoid shape floating across the sky over Burbank.
More mystery 'jars of the dead' found in Laos
5-18-2019
Archaeologists have unearthed an additional 137 large stone jars at megalithic sites in Southeast Asia.
Firm offers Game of Thrones spoiler insurance
5-18-2019
A British insurance company is offering compensation to viewers who have had the finale inadvertently spoiled.
Stories & Experiences
Crashed UFO off Gig Harbor Wa.
5-15-2019 | Gig Harbor Wa.
 
 
My enlightenment
5-12-2019 | Sacramento, California
 
I was bitten by a ghost
5-11-2019 | Virginia
 
Giant bird shadows
4-21-2019 | Hammond Indiana
 
 
Winter solstice hooded figures
3-6-2019 | Decatur, IL
 
My skinless demon
2-8-2019 | Michigan
 
Johannesburg Men in Black
1-2-2019 | Johannesburg South Africa
 
Giant flash of light
1-2-2019 | Pomona, California
 

         More stories | Send us your story
Featured Videos
Gallery icon 
What happens when lava meets ice ?
Posted 5-18-2019 | 1 comment
This intriguing experiment reveals just what happens when you pour lava on to ice.
 
7 ghost stories from the Queen Mary
Posted 5-10-2019 | 2 comments
A look at some creepy tales of ghosts and hauntings from the retired ocean liner.
 
Could Jack have survived 'Titanic' ?
Posted 5-2-2019 | 2 comments
The MythBusters investigate whether or not both Jack and Rose could have survived the movie.
 
 View: More videos
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 Unexplained-Mysteries.com (c) 2001-2018
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ