At this point, the idea that birds are actually just what's left of dinosaurs is widely accepted, so it should be no surprise that researchers are working hard to determine what pieces of modern birds are actually leftovers from much more ferocious beasts that roamed the earth tens of millions of years back. This still leaves us with a very straightforward question: why did colored eggs emerge in the first place? Birds did not evolve their egg colors on their own, but inherited the ability from non-avian dinosaurs.
In spite of their diversity, bird eggs derive their color from just two pigments: protoporphyrin, which produces a reddish-brown color, and biliverdin, which creates blue and green.
"[This] is a true discovery", says Mark Hauber, an ornithologist who studies the evolution of bird eggs and brooding behaviors at the University of IL in Urbana and was not involved in the research. Maps of protoporphyrin accumulation across the surface of numerous eggs, including Deinonychus and some troodontids revealed darker speckling patterns on top of the background color.
"Our study fundamentally changes our understanding of egg color evolution, and adds color to dinosaur nests in the real "Jurassic World".
Fossil theropod dinosaur egg, front, with modern bird eggs in a nest.
But really though: A study from a year ago found that oviraptors, a dinosaur of the late Cretaceous period, laid blue-green eggs, containing the same pigments as modern bird eggs. As part of a new study, published recently in the journal Nature, Wiemann and her colleagues expanded their research to include eggshells from 15 Cretaceous dinosaurs and extinct birds, along with the eggs of living birds like chickens, emus and terns, reports John Pickrell of Science. But many birds have colored eggshells that camouflage their eggs in nests that are exposed to the elements and predators.
Illustration of a hatching Deinonychus chick from a blue egg with brown spots. One animal coloration expert not involved in the study, professor Mary Caswell Stoddard at Princeton, thought the research would ignite conversations about dinosaur behavior.
Djokovic reaches Paris Masters quarterfinals; Cilic wins
Nishikori defeated Anderson 6-4 6-4 to gain revenge for his Erste Bank Open final defeat to the big South African in Vienna. Thiem, on pace to qualify for the Finals, rallied past the Shanghai Masters finalist Borna Coric 6-7 (3), 6-2, 7-5.
Now the researchers have analyzed egg shells from more.
"We can fingerprint the pigments", Wiemann said. If it's a quail egg, it has inky speckles.
"Dinosaur eggs could have been camouflaged, they could have been individually recognized, they could have been mimetic", says Hauber.
Most likely, it was a single event, even of uncertain mutation, which caused accumulation of biliverdin in the shell and made the eggs for the beginning of blue-green.
The researchers in this particular study looked closely at various fossilized eggs from dinosaurs to see if they could detect what was once pigment. Before this work, though, many biologists predicted that modern birds, not their ancestors, developed colorful eggshells. Thermoregulation? Or, as in some parasitic birds, to mimic the appearance of a host's eggs?
And, she said, "It's an example of another feature that was really thought to be exclusive among birds".
Hafeez hit five boundaries and a six in his 36-ball knock while Asif's 21-ball innings had a six and a boundary. Babar Azam is 88 runs away from becoming the sixth Pakistan batsman to reach the 1000-run landmark in T20Is.
China's phenomenal achievements are worth emulating. "So we can learn more from China than any other country", he maintained. They agreed to continue strategic communication on regional and global issues of importance, Radio Pakistan reported.
Saudi Arabia and Russian Federation have said they will pump enough to meet demand once USA sanctions are imposed. West Texas Intermediate ( WTI ) crude futures advanced 55 cents, or 0.9 percent, to $66.73 a barrel on Wednesday.
He added that the gains are a "testimonial to the robust employment picture is the broad-based gains in jobs across industries". The tight labor market is, indeed, delivering higher pay. "We are still in a phase of gradual, incremental creep".
The current record is 11 games, held by Frank Clark with Nottingham Forest in 1994 - Sarri now has 10 unbeaten games. He says he is not thinking about breaking the record for an unbeaten start to a Premier League career.
Another intriguing addition to the show is Canadian sports broadcaster Renee Young, well known for her WWE work behind the mike. The WWE star appeared on Raw on Wednesday night, looking much skinnier than usual.
But nearly two-thirds of marine wilderness lies in worldwide waters, beyond the direct control of nations. (3,861 sq. mi.). Under UNESCO World Heritage Convention, some wilderness areas are protected as Natural World Heritage Sites.
Nevertheless, NASA has more than 60 operational science missions right now, a "golden age of NASA science" according to Hertz. Scientists will spend "a decade or more in search of new discoveries in the treasure trove of data Kepler provided".
'Dumbo' octopus filmed in Pacific Ocean
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Indonesia Protests Saudi Arabia's Execution of Maid
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Former Afghan president sees Taliban role in peace
The last round, held earlier this month, led to the release of a key Taliban leader, Mullah Abdul Ghani Baradar. But it is believed that they traveled through Pakistan after coordinating with the authorities in Islamabad.
Ten years jail for husband who encouraged his wife to end life
Graham Morant, 68, was convicted last month of counselling and aiding his wife, Jennifer Morant, to take her own life in 2014. A husband hoping to get his hands on a $1.4 million-dollar life insurance windfall has been sentenced to 10 years in jail.
Moon Rocks Expected To Fetch Up To $1 Million In Auction
Launched on 12 September 1970, Luna 16 was the first robotic probe to land on the Moon and return samples of lunar soil to Earth. After perforating the surface for seven minutes, the drill reached a stop at 35 centimetres depth and withdrew the soil sample.
Shah Rukh Khan celebrates his 53rd birthday
The film is produced by Shah Rukh's wife Gauri Khan and also features Anushka Sharma and Katrina Kaif in leading roles. Salman Khan 's Eid release "Race 3" brought along with it a glimpse of " Zero " which had Salman dancing with SRK.