Understanding through Discussion


Welcome! You are not logged in. [ Login ]
EvC Forum active members: 89 (8876 total)
Current session began: 
Page Loaded: 12-11-2018 4:27 AM
190 online now:
Phat (AdminPhat), Tangle, vimesey (3 members, 187 visitors)
Chatting now:  Chat room empty
Newest Member: Bill Holbert
Post Volume:
Total: 843,778 Year: 18,601/29,783 Month: 546/2,043 Week: 98/386 Day: 1/47 Hour: 0/0


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   Birds Inherited Colorful Eggs From Dinosaurs
RAZD
Member
Posts: 19719
From: the other end of the sidewalk
Joined: 03-14-2004
Member Rating: 2.8


(1)
Message 1 of 4 (842778)
11-08-2018 6:38 AM


From Audubon:

quote:
Birds Inherited Colorful Eggs From Dinosaurs

No matter how much evidence we have that birds evolved from dinosaurs, it can still be hard to believe that the harmless little sparrow hopping about your park bench is somehow related to the mighty and ferocious Tyrannosaurus rex. But go far enough back, and there is a connection.

Now, a new finding further links modern avians and their ancient ancestors. In a paper published last week in Nature, a group of researchers from Yale University, the American Museum of Natural History, and the University of Bonn in Germany found that the coloration of bird eggshells evolved from dinosaurs, not, as previously believed, as an independent trait.

From the striking azure of an American Robin’s egg to the Jackson Pollock-esque brown squiggles on a Great Bowerbird’s, the diversity of colors and patterns in modern bird eggs derive from just two pigments: red and blue, or red-brown protoporphyrin IX and blue-green biliverdin. Birds have long been considered unique for their colored shells, but as it turns out, those same exact pigments can be found in the eggs of certain dinosaurs.

Analyzing 18 fossilized dinosaur eggshells from around the world, the researchers used Raman microspectroscopy, a nondestructive laser method, to test for the presence of the two pigments. They found them in the eggshells of Eumaniraptoran dinosaurs, a group including theropods such as velociraptors that are believed to have eventually evolved into modern birds.

The analysis also found that eggs belonging to dinosaurs that buried their eggs had no pigment at all. This, the researchers say, indicates that egg coloration might have co-evolved with the open-nesting habits of theropods.


More at link

So was the original bird "kind" a dinosaur?

Enjoy


we are limited in our ability to understand
by our ability to understand
RebelAmerican☆Zen☯Deist
... to learn ... to think ... to live ... to laugh ...
to share.


• • • Join the effort to solve medical problems, AIDS/HIV, Cancer and more with Team EvC! (click) • • •

Replies to this message:
 Message 3 by AZPaul3, posted 11-08-2018 4:33 PM RAZD has acknowledged this reply
 Message 4 by ringo, posted 11-09-2018 11:39 AM RAZD has acknowledged this reply

  
AdminNosy
Administrator
Posts: 4754
From: Vancouver, BC, Canada
Joined: 11-11-2003


(1)
Message 2 of 4 (842780)
11-08-2018 9:29 AM


Thread Copied from Proposed New Topics Forum
Thread copied here from the Birds Inherited Colorful Eggs From Dinosaurs thread in the Proposed New Topics forum.
  
AZPaul3
Member
Posts: 3518
From: Phoenix
Joined: 11-06-2006
Member Rating: 3.2


(2)
Message 3 of 4 (842815)
11-08-2018 4:33 PM
Reply to: Message 1 by RAZD
11-08-2018 6:38 AM


So was the original bird "kind" a dinosaur?

Oow, oow, me! I know the answer to this one!

Yes!

Do I get a cookie?


This message is a reply to:
 Message 1 by RAZD, posted 11-08-2018 6:38 AM RAZD has acknowledged this reply

  
ringo
Member
Posts: 15740
From: frozen wasteland
Joined: 03-23-2005
Member Rating: 1.7


(2)
Message 4 of 4 (842868)
11-09-2018 11:39 AM
Reply to: Message 1 by RAZD
11-08-2018 6:38 AM


RAZD writes:

... it can still be hard to believe that the harmless little sparrow hopping about your park bench is somehow related to the mighty and ferocious Tyrannosaurus rex.


I used to have a bird feeder. In fact, the little guys can be VERY aggressive. They physically knock each other off the perches.

And our geese will blot out the sun.

This message is a reply to:
 Message 1 by RAZD, posted 11-08-2018 6:38 AM RAZD has acknowledged this reply

  
Newer Topic | Older Topic
Jump to:


Copyright 2001-2015 by EvC Forum, All Rights Reserved

™ Version 4.0 Beta
Innovative software from Qwixotic © 2018