What came first? The chicken… or the dinosaur? (aka: What came first? A sensational story or the need for it?)

Rex in the hen house
Rex in the hen houseCourtesy Mark Ryan
A new study came out last week that appeared destined to shake up the current line of thought that birds descended from dinosaurs. Birds share common traits with some dinosaurs, including furculas (wishbones), hollow bones, and other skeletal features, which scientists have interpreted to mean the former descended from the latter. But now a new study by researchers at Oregon State University, it may have happened just the opposite way.

"We think the evidence is finally showing that these animals which are usually considered dinosaurs were actually descended from birds, not the other way around," said John Ruben, a professor of zoology at OSU, and the study’s lead author.

The study involved the fossil of a Microraptor, a dromaeosaurid dinosaur with evidence of feathers on both its arms and legs. Studying the skeletal remains, Ruben and his colleagues constructed 3-dimensional models that they tested for flight capabilities. Their study showed Microraptor’s structure better suited to be glider rather than a flyer. From this Ruben extrapolated that it made more sense that Microraptor descendents came down from the trees and eventually evolved into flightless birds we call dromaeosaurs or raptors.

"Raptors look quite a bit like dinosaurs but they have much more in common with birds than they do with other theropod dinosaurs such as Tyrannosaurus," he said. The study appears in the journal for the Proceedings of the National Academy of Science (PNAS).

Sounds good at first, and I have to admit I was smitten with the idea. But not everyone feels the same way.

Over at the Smithsonian’s Dinosaur Tracking blog, freelance science writer Brian Switek has pointed out that Ruben’s proclamation is “actually only a commentary, or the equivalent of an opinion piece.”

He then goes on to point out some of the flaws in Ruben’s argument, particularly the uncertainty surrounding Microraptor’s place in the evolution of flight, and the lack of reasonable evidence that Velociraptor wasn’t a dinosaur. Switek doesn’t think Ruben’s claim stands up to scrutiny.

But what annoys Switek most is how the media inundates the various outlets with this kind of science news, giving it wide distribution and often, undeserved credibility.

“In this increasingly fragmented media landscape, knowledgeable science writers who recognize a fishy story when they see one are getting outnumbered. More often, websites and newspapers simply reprint press releases issued by universities and museums (science writers call this “churnalism”), and this policy sometimes lets questionable science slip through the cracks.” – Brian Switek

One of the reasons for this is the internet. There's just a huge amount of time and space that requires constant feedings of content now. It does make things difficult to sort through. There have been times I’ve begun researching some new science story to post on Science Buzz only to become frustrated with details that don’t seem to add up, confusing statements, info that counters other info, and outright misinformation. Some of it may be due to the writer(s) not being able to properly articulate or distill a particular idea or hypothesis for the general reader (I know I suffer from this occasionally). Sometimes it’s due to the fact that many science writers lack access to the papers themselves (most science journals require paid subscriptions to access anything beyond an abstract of the story), so writers are left with relying on press releases and abstracts or another writer’s thoughts on the subject (like I’m doing here). But other times it ends up being that there’s no real story at all, just a rehash of something from months or years ago that somebody figures needed to be in the headlines again.

To this end, paleontologist Dave Hone over at his Archosaur Musings blog recently posted “A guide for journalists reporting on dinosaur stories” that deals with some of issues raised here. It’s worth reading.

Science Buzz has also covered science writing issues in previous posts.
How to read/write science news
Bad Science Journalism

ScienceDaily.com story
Microraptor gui: Bird or Dinosaur
Origin and Evolution of Birds

Your Comments, Thoughts, Questions, Ideas

Anonymous's picture
Anonymous says:

the chicken had to have come first, or there would be nothing to nurture the egg or the little chick. Therefore the chicklet would not have survived and the species would have never been started.

posted on Sat, 02/20/2010 - 4:19pm
Anonymous's picture
Anonymous says:

the chiken would have had to come first because an egg would not have been able to be nurtured by another live chicken. I believe that the chicklet would not have been able to survive without nurture.

posted on Sat, 02/20/2010 - 4:21pm
Anonymous's picture
Anonymous says:


posted on Sun, 02/21/2010 - 11:13am
Anonymous's picture
Anonymous says:

most definately the chicken came before the egg!!! How else would the egg have survived... but then that would mean there would have to have been a rooster to or else there could be no chicken (i don't really want to go into details). So maybe the rooster came first then God came and took a rib and made the chicken:) Who knows?!

posted on Sat, 03/27/2010 - 3:43pm
Anonymous's picture
Anonymous says:

The dinosaur and the ancestors of the chicken was first :P

posted on Tue, 03/30/2010 - 8:27am
bill gates's picture
bill gates says:

the first chicken came from a dinosour

posted on Wed, 08/22/2012 - 11:31am

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