New study says that colored bird eggs come from dinosaurs

 
Related

Stephen Hawking: the extraordinary scientist who changed our understanding of physics

Technology news
330 points

Have you ever wondered why you are in a bad mood when you are hungry?

Technology news
374 points



Most recent

Haz el bien y es posible que seas recompensado

Enrique TF
10 points

El vídeo que demuestra cómo vive el coronavirus en tu cartera: La tarjeta de crédito y los billetes

Henri Monzó Catalá
16 points

COVID-19: ¿Cómo saber si es resfriado, gripe o el coronavirus?

Henri Monzó Catalá
332 points

GRAN COLOMBIA GOLD ENTREGA ACTUALIZACIÓN DE EXPLORACIÓN PARA SU PROYECTO ZANCUDO

Image Press
10 points

ROSARIO CON ESCRUTE DIGITAL 1

Miguel Alderete Garrido
32 points

Préstamos online: 5 consejos

Madeleine Gutierrez
18 points

15 Blogs de Cosmética Natural que Recomendamos

Productos Naturales
16 points

Papá cuéntame otra vez

Enrique TF
16 points

Aquellas pequeñas cosas y ese frecuente: "Viejo, por mi cómo si te la machacas"

Enrique TF
8 points

"ENCUENTRO ENTRE DOS MUNDOS"

PENSAMIENTO LIBRE
70 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