New study says that colored bird eggs come from dinosaurs

 
Related

Profitable Giants Like Amazon Pay $0 in Corporate Taxes. Some Voters Are Sick of It

Technology news
258 points

Minimally invasive surgery less effective than open surgery for cervical cancer

Technology news
208 points



Most recent

La dramática agonía de los arrecifes de coral: Desaparecerán en 30 años, alertan los científicos

NOTICIAS-ETF
104 points

Las ventajas de viajar a un destino distinto: descubre Punta Cana

Curiosidades
14 points

Arranca el 024 con el objetivo de reducir la cifra de suicidios

NOTICIAS-ETF
8 points

La Milanesa más grande del mundo

NOTICIAS-ETF
94 points

El webinar de Colombia Fintech y Etek

Negocios Hoy
6 points

Un comestible para dar nombre a algunos políticos

El diario de Enrique
10 points

¿Cuáles son los requisitos para solicitar un préstamo personal?

mecedora.net
8 points

Unos científicos españoles consiguen curar por primera vez la apnea del sueño

NOTICIAS-ETF
148 points

España creará energía eléctrica con las olas del mar

NOTICIAS-ETF
16 points

Las cervezas que puedes beber al día sin riesgo para la salud

NOTICIAS-ETF
130 points
SHARE
TWEET
The spectrum of colors seen on modern bird eggs likely evolved from dinosaurs, a new study suggests.

New study says that colored bird eggs come from dinosaurs

According to a new study published Wednesday in the journal Nature, non-bird dinosaurs laid eggs in open or partially open nests. Modern bird eggs, even those that are spotted or speckled, are primarily based on two color pigments: red and blue.

The research suggests with the open nesting practices of dinosaurs, white eggs were more likely to fall victim to predators. So colored eggs could blend in better with the nest, giving them a better chance for survival.

"This completely changes our understanding of how egg colors evolved," said Jasmina Wiemann, Yale paleontologist and the study's lead author. "For two centuries, ornithologists assumed that egg color appeared in modern birds' eggs multiple times, independently."

Using a non-destructive laser microspectroscopy, Wiemann and a team of researchers inspected 18 fossilized dinosaur eggshells for the existence of two eggshell pigments, to see how far in colored eggs go in history.

"Colored eggs have been considered a unique bird characteristic for over a century. Like feathers and wishbones, we now know that egg color evolved in their dinosaur predecessors long before birds appeared," said Mark Norell, the Macaulay Curator of Paleontology at the American Museum of Natural History and co-author of the study.

Although the team didn't find any pigment in two modern bird ancestors, the triceratops and the long-necked diplodocus, they did come up with pigment in the Eumaniraptoran dinosaur eggshells, NPR News reported. These were members of the small, meat-eating group that included the velociraptor, made famous in the Jurassic Park movies.

"We infer that egg color co-evolved with open nesting habits in dinosaurs," Wiemann said. "Once dinosaurs started to build open nests, exposure of the eggs to visually hunting predators and even nesting parasites favored the evolution of camouflaging egg colors, and individually recognizable patterns of spots and speckles."

By Tauren Dyson

Fuente: www.upi.com
SHARE
TWEET
To comment you must log in with your account or sign up!
Featured content