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Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers - Science/Technology - Nairaland

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Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Nobody: 9:18am On May 14, 2020
It's been called the world's most dangerous bird. Its long dagger-like middle toes, in fact, were responsible for the death of a man in Florida last year.

But what excites scientists about the cassowary — a large, emu-like, flightless bird — is its distinctive look. With its black iridescent feathered body, its blue, turquoise and magenta neck and horned crest or casque, it's been described as looking like a "high-fashion dinosaur."

"It's a little over a meter tall. It's pretty heavy. Their bones are dense. They definitely can cause some damage," said Chad Eliason, a staff scientist and postdoctoral fellow at the Field Museum in Chicago and an author of a new paper on the giant bird that published Wednesday in the journal Science Advances.

The southern cassowary can inflict serious injury with its dagger-like claw on the middle toe.

"There's lots of stories about dangerous kicks with their claws. They help you to realize birds are related to dinosaurs."

Each of its three-toed feet has a claw that can be up to 4 inches or 10 centimeters long, allowing it to slice open a predator with a single kick, according to the San Diego Zoo. It can also run up to 31 miles per hour through dense forest and jump up to 7 feet (2 meters).

High Gloss
New research on the feathers taken from a dead bird has now revealed what gives cassowary feathers their glossy black shine.

"Understanding basic attributes like how colors are generated is something we often take for granted in living animals," said paleontologist Julia Clarke, a professor at the Jackson School of Geosciences at the University of Texas at Austin and the paper's senior author.

"Surely, we think, we must know everything there is to know? But here, we started with simple curiosity. What makes cassowaries so shiny?"

Unlike in other shiny birds, such as hummingbirds or crows, the cassowary's glossiness is produced by the rachis, or the spine of the feather, rather than the barbules, or minute filaments fringing a feather.

Since the fluffy barbules on cassowary feathers are pretty sparse, the rachis gets more exposure to light than in "thick-feathered" birds, giving it a chance to literally shine.

"The gloss is in a totally different part (compared to other birds). You picture a feather being like a tree, the gloss is in the trunk of the tree, not the branches," Eliason explained.

The three species of cassowary are native to parts of northern Queensland, Australia and New Guinea. They live on fruit.

The study suggested that the cassowary's unique gloss-producing mechanism would have evolved gradually over time, with an ancestral bird losing its barbules and the cassowary developing a thicker central feather shaft.

Eliason suspected that flightlessness might have given cassowaries more evolutionary room to develop their odd-shaped feathers.

"Needing to be able to fly is a very strong stabilizing force on wing shape," Eliason said.

"Losing that constraint, that need to fly, might result in new feather morphologies that produce gloss in a way that a flying bird might not."
Source: https://edition.cnn.com/2020/05/13/world/cassowary-bird-feathers-scn/index.html

5 Likes 2 Shares

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Nobody: 9:19am On May 14, 2020

1 Like 1 Share

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Ofemmanu1: 9:23am On May 14, 2020
Casso

5 Likes 4 Shares

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Nobody: 9:42am On May 14, 2020
Nice. I watched a documentry on the exotic bird on National Geographic. It's really pretty.

45 Likes 6 Shares

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by DrPurple(m): 10:53am On May 14, 2020
The Last Picture Resemble the Back of a Lady

118 Likes 8 Shares

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Nobody: 10:59am On May 14, 2020
DrPurple:
The Last Picture Resemble the Back of a Lady
Yeah, like those weavons

66 Likes 1 Share

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by NwaNimo1(m): 7:11pm On May 14, 2020
See meat.....

7 Likes 2 Shares

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Goldenheart(m): 7:12pm On May 14, 2020
I still don't know how it got it's Unique feather tongue


This is all I see cool

grin

234 Likes 7 Shares

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by damosade(m): 7:12pm On May 14, 2020
hi

2 Likes 2 Shares

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by iCauseTrouble: 7:12pm On May 14, 2020
Is this bird more dangerous than night birds in Edo state? cool

58 Likes 1 Share

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Racoon(m): 7:12pm On May 14, 2020
sad Bird is looking ugly.The claws/talons are looking scary.

5 Likes

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by medTechworld(f): 7:12pm On May 14, 2020
Okay
Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Cakephp44: 7:13pm On May 14, 2020
Wait o... Is there a bird more dangerous than eagle

3 Likes 1 Share

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Beremx(f): 7:13pm On May 14, 2020
I just quickly scrolled down to look at the bird. I will still scroll up to read the description of the bird

46 Likes 1 Share

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by gungab(m): 7:13pm On May 14, 2020
If Nigerian ladies take this one
Na make-up tinx ooo
Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by hefelove(m): 7:13pm On May 14, 2020
Na God give am na abi he steal am ni
Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by EVERCUTE(m): 7:13pm On May 14, 2020
Hmm!

1 Like

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by africandollar: 7:14pm On May 14, 2020
That last pix ehn? E resemble back view of one babe head after she don wear wig finish. Ol'boy this kin bird go done dey extinct if na to say na Nigeria dem dey find am 'cos babes go just dey kidnap dem finish dey use the feathers take do wig! shocked tongue grin

11 Likes

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Nobody: 7:14pm On May 14, 2020
Cool.


It doesn't look scary though.
The second pics makes me remember Rango.
I wouldn't mind having it's grilled meat with some chilled bottles.

2 Likes 1 Share

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by IMASTEX: 7:14pm On May 14, 2020
Nature is indeed beautiful. Change the researcher to some people I know, you will see 10 ways to prepare a good delicacies with this bird. grin

2 Likes 1 Share

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Engritodo: 7:14pm On May 14, 2020
Nice
Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by baike: 7:14pm On May 14, 2020
The bird isn't loking dangerous to mecheesy

7 Likes

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Trailblazer1(m): 7:14pm On May 14, 2020
Pointless piece of information

2 Likes

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Dottore: 7:14pm On May 14, 2020
ok
Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Toju200(m): 7:14pm On May 14, 2020
BUHARI should open border for this bird let's see if it will still hold it's title grin

4 Likes 1 Share

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by eleko1: 7:15pm On May 14, 2020
sad for here, Holy Ghost fire ,die die die u go Dey hear from mfm,Lord Choswn etc.Why?Fear village pipu

3 Likes

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Authoreety: 7:15pm On May 14, 2020
About being dangerous, I believe Nigerians think otherwise

5 Likes

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by IBILEmayweather(m): 7:15pm On May 14, 2020
B
Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Chukskin: 7:15pm On May 14, 2020
Eagle soar more*

1 Like

Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by Premiumwriter: 7:15pm On May 14, 2020
This one meat go tough o
Re: Cassowary: How The World's Most Dangerous Bird Got Its Unique Feathers by NaijadrivaCars: 7:15pm On May 14, 2020


Saw a documentary about it sometime ago.

Let them come to Nigeria and become meat, dangerous kor, dangerful intongue

12 Likes

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