The Facts About Dinosaurs & Feathers

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  • Publicado el 27 nov 2017
  • Over the past 20 years, dinosaurs of all types and sizes have been found with some sort of fluff or even full-on plumage. These fuzzy discoveries have raised a whole batch of new questions so we're here to tell you everything we know about dinosaurs and feathers.
    Produced in collaboration with PBS Digital Studios: esclips.com/user/pbsdigitalstudios
    Thanks as always to Nobumichi Tamura for allowing us to use his wonderful paleoart. Check out his portfolio: spinops.blogspot.com
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    References:
    www.ucmp.berkeley.edu/diapsids/birds/archaeopteryx.html
    watermark.silverchair.com/j.1095-8312.1976.tb00244.x.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAAfUwggHxBgkqhkiG9w0BBwagggHiMIIB3gIBADCCAdcGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMwcgaUHAd0QLZSaixAgEQgIIBqMBuONttH3vzrZjnZ3x6hHOYEWTK0NKIXPaEsJWvtg-gIz2L8KeTlj8bmH3BNA8vDbeBy-cMgAejmIPwXtz3TCAtGsu5I4gGRcDnQuERZUsCy0UKJcS38tIa42C362b83Q9o-GC8gR0peqyTOB6SbuF10DUx8bclg_U_CUehID11YiEsSHKDXqUn8H6yFVYRW9RJ7bdZAEWWCDwYaGy-aBMUbpl2C9mwWyL7TMQzjG-DYDj4J2-h8iXZ7CafvLJ2PH6sKZGSNOxD_KA1xLd9JzbZpiGnQ_ptWeWfVCD3DirVtnnlKQrVJt7htNifbTJCsLcvTThuIU9kmCUzD9SSMYX-wn8el4kXWEMMMTE4VghC97hYc7ePEdu3jT4uity6BFEzqN7BniYNhNsFI9XKQ7Sx_gW70fv-FJo141kUDMzJdiKyK0sXXbZbna7KEqXXo0ZaT62cUBMRiXtWBNLk3K8yHhIcel2SOwTmpL_kTSyA-lXen5H1U9bZkLPc46pVzDo2mjLPRXUie_CljiDBCLCjGKT13Oayrn20rJOousRIzwOPVyTcxnI
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    www.bioone.org/doi/abs/10.1206/0003-0082(2002)381%3C0001:NSOMZT%3E2.0.CO;2
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    science.sciencemag.org/content/299/5605/402.full?maxtoshow=&HITS=10&hits=10&RESULTFORMAT=&author1=Dial%252C%20K&searchid=1056403726368_9319&stored_search=&FIRSTINDEX=0&fdate=10/1/1995&tdate=6/30/2003
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  • Ciencia y tecnologíaCiencia y tecnología

Comentarios • 1 023

  • QueekHeadtaker
    QueekHeadtaker Hace 5 días

    Most theropods had feathers, with only a very few exceptions like carnotaurus and its relatives being predominantly scaly. It doesn't matter if that fact "ruins your childhood" or not, because dinosaurs aren't movie monsters to be depicted however we like them best, they were living creatures who really existed.

  • Sebastien Guenette
    Sebastien Guenette Hace 6 días +1

    I wish that i add a teacher like you!!!

  • Eltonic
    Eltonic Hace 7 días

    We should bury humans with feathers so historians get really confused as to why humans had feathers for a bit

  • Shun Grim
    Shun Grim Hace 8 días

    Im waiting that youll say the feathers were used in finding a mate too.

  • Martin Wilson
    Martin Wilson Hace 9 días

    Ouch, she is going to lose PBS even more educated subscribers by saying birds ARE dinosaurs, when they aren't

  • arjoon sathiapradeep
    arjoon sathiapradeep Hace 12 días

    Did anyone notice her necklace? Is she wearing a Dino skull?

  • محمد الأمين بن زقوطة

    dinosaurs are damn amazing \m/

  • Patriarch of the Church of Ben

    Turns out T-Rex WAS mostly scaly, based on some recently discovered scale impressions, it’s now thought they had a lion-like feather plume, but leather-like scales elsewhere

  • Metalosopher
    Metalosopher Hace 16 días +1

    Well this is disappointing. Turns out dinosaurs aren't dinosaurs. Just primitive boring old birds. I want my mean, scaly, ugly, monstrous, terrible lizards back.

  • Brian Button
    Brian Button Hace 18 días

    I doubt if this is in your bailiwick but . . .
    . . . I would *really* like to hear the case for theories of extinctions of large mammals in Eurasia, Australia and America. Mass extinctions coincide with human arrival in these continents but there is considerable static about attributing these to man. Frustratingly, the other theories I have heard ("there was climate change") don't explain. We have a pattern of behavior -- we can prove homo sapiens eliminated many species in many places -- we have overwhelming circumstantial evidence -- our arrival coincided with the extinctions -- and moderate direct evidence -- mass kill sites. Other theories don't explain.
    Why do scientists waffle on this theory so carefully?

  • Evitare
    Evitare Hace 19 días +1

    Why is it so hard to believe T-Rex did not have feathers over as much of its body as Yutyrannus? Humans are apes with hair only sparsely over the body, yet most apes are, as this video puts it, “furry”. Evolution is capable of such great diversity, that until we have some kind of proof, shouldn’t we hold off on assumptions about skin coverings?

    • Akrian Mapping
      Akrian Mapping Hace 13 días

      Evitare yeah, it probably had a mane of feathers, and an air sac, as they found probable evidence for one on Tarbosaurus, which may be a Tyrannosaurus

  • Tabgach Giyamhu
    Tabgach Giyamhu Hace 23 días

    your voice sounds sweet.

  • C Brieeze
    C Brieeze Hace un mes

    What's the difference between proto feather and hair? If it's just a simple stalk?

    • Akrian Mapping
      Akrian Mapping Hace 13 días

      C Brieeze they are made of different proteins I think

  • Felipe Lorenzzon
    Felipe Lorenzzon Hace un mes

    do a video on the evolution of mammals

  • TerminalVerbosity
    TerminalVerbosity Hace un mes

    Would arm feathers not have made bipedal dinosaurs faster? Stick your arms out with the feathers roughly horizontal and as you run the feathers would act like fixed wings and generate a small amount of lift. That lift would act in opposition to gravity, thus reducing your relative weight. Lower weight gives you faster acceleration, a higher top speed and better endurance. And the faster you go, the more lift you generate.
    It might only be a small improvement, but it could easily be the difference between life and death.

  • Holotheria
    Holotheria Hace un mes

    Archaeopteryx isn’t a crown group bird though

    • Akrian Mapping
      Akrian Mapping Hace 13 días

      Holotheria it really isn’t a bird at this point. Just a Paravian

  • spidy9237
    spidy9237 Hace un mes

    why always draw arms? they had small wings... not been able to fly...

  • My 3D Animation And Matchmoving

    i think that lizards also was dinosaurs. lizard have teeth and face more like dinosaurs.

    • Akrian Mapping
      Akrian Mapping Hace 13 días

      My 3D Animation And Matchmoving Squamata is very far from Archosauria, so they weren’t

  • Петър Жотев
    Петър Жотев Hace un mes +2

    6:45-There is a little shrimp on the right picture

  • D. E.
    D. E. Hace un mes

    Archeopteryx was a strange looking bird. Has there been any feathered dinosaur fossils that were not bought in markets? Were any found in the earth by paleontologists?

  • Etho Baryonyx
    Etho Baryonyx Hace 2 meses

    What about beaks?

  • channanator
    channanator Hace 2 meses

    have it been ruled out that the "feathers" on any of these dinasours been used like a "porcpine quills" as a defense or deterrence to predictors? could its function be both a feather to help climbing up the tree with the claw on the wings as well as stiffen to become quills like defense? any research that rule out this "quills" possibility?

  • Matt Somes
    Matt Somes Hace 2 meses

    when did bird/dinosaurs start nesting in trees?

    • Akrian Mapping
      Akrian Mapping Hace 13 días

      Matt Somes probably in the Triassic, we have massospondylus nests from then

  • willams ramos
    willams ramos Hace 2 meses

    Talk about the megathetium please!!
    I am very interested in this specie.!

  • Darjan Jamnik
    Darjan Jamnik Hace 2 meses

    im goning to KFC ..... whos the king.... RIP small rodent grandpa... you have been avenged

  • starspawn
    starspawn Hace 2 meses +1

    Pterasaurs, the sister-group to the dinosaurs, had hair-like body covering called pycnofibers, which were structurally similar to the protofeathers on theropod dinosaurs.
    So based on phylogenetic bracketing, it is reasonable to assume that protofeathers were a trait basically common to all dinosaurs.

  • Yujen Boston
    Yujen Boston Hace 2 meses

    I love that Kali always wears a brooch and an amulet that corresponds with the topic of the video. I mean, it's kinda cute ^_^

  • Frank Fanelli
    Frank Fanelli Hace 2 meses

    You guys have been playing Ark:Survival Evolved. You literally are following the roster :P

  • A Vlogger Named Emman
    A Vlogger Named Emman Hace 2 meses

    What if dinos didn't get extinct? What if they already evolved into birds or at least sprung with more feathers to keep them warm, if we say that volcanoes erupted or an asteroid crashed into earth thus cooling it?

    • A Vlogger Named Emman
      A Vlogger Named Emman Hace 2 meses

      Well THANKS...

    • snillocgrom
      snillocgrom Hace 2 meses

      Emman Plays
      I helped you form a better theory for next time

    • A Vlogger Named Emman
      A Vlogger Named Emman Hace 2 meses

      snillocgrom its also just a theory, i wasn't stating its a fact, just chill.

    • A Vlogger Named Emman
      A Vlogger Named Emman Hace 2 meses

      Uh, its just an opinion.

    • snillocgrom
      snillocgrom Hace 2 meses

      Emman Plays
      They didn't go extinct. Birds are literally scientifically classified as avian dinosaurs. Rather, the more correctly way to state this is that MOST dinosaur families became extinct. And one strain of them did not.

  • abbasali zaidi
    abbasali zaidi Hace 2 meses

    Ur beautiful😍😘

  • Ogram Brat
    Ogram Brat Hace 2 meses

    Is there hair on dinosaurs?

  • Charles Ncharge
    Charles Ncharge Hace 2 meses

    I enjoyed the video, but the gal narrating has a disturbing resemblance to my sister. It was like watching somebody else's voice come out of her.

  • luiscarlosbarragan
    luiscarlosbarragan Hace 2 meses

    I tried to picture a Deinonychus with feathers, its like imagining a giant chicken running after me, trying to eat me.

    • snillocgrom
      snillocgrom Hace 2 meses

      There are birds other than chicken. IT would look more like a giant bearded vulture or something like that

  • Aishwarya K.S.
    Aishwarya K.S. Hace 2 meses

    Her voice is like warm maple syrup on soft fluffy pancakes :))))) perfect for learning!

  • Christoffer Eriksson
    Christoffer Eriksson Hace 2 meses +1

    Fantastic! Thank you so much for this!

  • Cmharper 50
    Cmharper 50 Hace 2 meses +2

    PLEASE DO A VIDEO ABOUT ALLOSAURIDE!!!! love the video!

  • Soplet
    Soplet Hace 2 meses

    I still prefer Trex without feather....

  • Lazurite Star
    Lazurite Star Hace 3 meses +1

    I showed this to my aunt who raises pigeons and now she calls them Derpisaurs.

  • David Peters
    David Peters Hace 3 meses +1

    Let's not forget that birds are naked under the skin, not scaly. And that scales on bird feet, and maybe elsewhere on dinosaurs, are former feathers. The origin of feathers in embryo birds is at the lower back and over the pelvis, probably recapitulating phylogeny as this is where you find proto-feathers on non-bird dinosaurs.

  • martijn van weele
    martijn van weele Hace 3 meses

    Can we just rename Oviraptor to Ovinutrix already?

  • Juan Jackson
    Juan Jackson Hace 3 meses +1

    This is a wonderful service, thank you!

  • Henk Spierings
    Henk Spierings Hace 3 meses

    And camouflage.

  • Dominic
    Dominic Hace 3 meses

    She's so hot.

  • find fik-shun
    find fik-shun Hace 3 meses

    I wonder Wat were we lol

  • Irene Roxanne
    Irene Roxanne Hace 3 meses +1

    My son would love to see a show about dromaeosaurs! Thanks for this excellent show!

  • Isaac Bakan
    Isaac Bakan Hace 3 meses

    Honestly. I wanna know how only dinosaurs with beaks survived to today.

  • TheChiconspiracy
    TheChiconspiracy Hace 3 meses

    Fluffy T-Rex is not accurate, according to this study rsbl.royalsocietypublishing.org/content/13/6/20170092

    • TheChiconspiracy
      TheChiconspiracy Hace 3 meses

      It would be "feathery" the same way an elephant is "hairy"... basically not visible at all unless you were too close for comfort.

    • Spudato
      Spudato Hace 3 meses

      TheChiconspiracy it would be lightly bristled, then

  • Mario Pineda
    Mario Pineda Hace 3 meses

    Thank you! Lovely video

  • Suraj Bhosale
    Suraj Bhosale Hace 3 meses

    Can you tell us about the origin and evolution of himalaya with the surrounding fauna?

  • Draimond
    Draimond Hace 3 meses

    TRex... The would be proto dragon!

  • Gunnar Lindberg
    Gunnar Lindberg Hace 3 meses

    love to learn dinosaurs

  • bard mask
    bard mask Hace 3 meses +1

    Wrong use of menagerie: A menagerie is a collection of captive animals, frequently exotic, kept for display; or the place where such a collection is kept, a precursor to the modern zoological garden.
    I would love to see this managerie of feathered dinosaurs that those scientists have seen, and why are they extinct

  • Berwin Enzemann
    Berwin Enzemann Hace 3 meses

    I have a fever and the only prescription is more feathered dinosaurs.

  • Jacob Opstad
    Jacob Opstad Hace 3 meses

    This just reminds me of Jurassic Park. That was the first time I heard about the theory that dinosaurs became birds.

  • TON O'CLAY
    TON O'CLAY Hace 3 meses +1

    Im sensing a pattern the dinos that have feathers also only really walk on 2 feet and have feet like a bird.

  • G0atboy
    G0atboy Hace 3 meses

    I praise evolution every day for chicken tendies

  • Ryan Somelofske
    Ryan Somelofske Hace 3 meses +1

    Doesn't moving Theropods to be a members or closer relatives of the Ornithischia just solve this. It makes sense considering extant theropods have bird like hipbones (because they are birds) and having the dinosaurs with similar hips and feathers grouped together makes so much more sense then separated.

  • Galvaton10000
    Galvaton10000 Hace 4 meses +1

    Those dinosaurs that didn't have feathers actually did, but thought it fashionable to wax them off. Interestingly enough there were also dinosaurs that thought it would be cool to wax their feathers into curls, reminiscent of a fossil called Ischíosaurs (the "Hip-lizard"), who was doing it before it was cool. Some dinosaurs plucked their eyebrows, and filled them back in to make them appear thicker. While others went all natural claiming #nomakeup on their social media. Fascinating stuff.

  • Autumn
    Autumn Hace 4 meses

    I love her voice 😍

  • Sigmund Holt
    Sigmund Holt Hace 4 meses

    I remember a movie I saw at the Imax theater in seattle were a woman argued birds having come from dinos and being told it was nonsense.

  • Kiean Jiles Co
    Kiean Jiles Co Hace 4 meses

    5:50 THAT T-REX LOOKS LIKE A TANUKI WOOOOOW I WANNA SEE ONE!

  • Nathan Jora
    Nathan Jora Hace 4 meses

    «the fossil record has turned out to be sooo generous»
    If it was, the dinosaur wouldn't be fluffy ><
    (seriously nature, why fluffy dinosaurs, why ?!! Don't care if it's more fit, how do you dare to make fit animals rather than cool animals ?!)

    • Akrian Mapping
      Akrian Mapping Hace 13 días

      Nathan Jora feathered dinosaurs look beautiful. And feathers were a helpful trait

  • Raccoon Residence
    Raccoon Residence Hace 4 meses

    You forgot sex, I think. Some Dino's were heavy, I think flapping and quick timing.

  • Yout oobonly
    Yout oobonly Hace 4 meses +1

    Uh ... did she just say "feather covered arse"? *LOL* Love this chick!

  • Virtual Reality Channel

    What a beautiful and horrifying world was the world of T Rex. I dream of a species that ends the horror. Robots?

  • Azathoth Asul morgul
    Azathoth Asul morgul Hace 4 meses

    Their is a mammel with a beak forgot name but it looks like a beaver mixed with a duck and it lays eggs

  • sharkfinbite
    sharkfinbite Hace 4 meses +1

    Is there a umbrella word you can use when you want to refer to has any kind of hair, fur, feathered, and etc. in single word? I want to have a universal word to refer to a creature that had that... instillation for body heat regulation, but doesn't not specify what kind of covering it has. It seems like we need it right now.

    • Akrian Mapping
      Akrian Mapping Hace 13 días

      sharkfinbite integument, I think. It also includes scales and skin

  • En5vy
    En5vy Hace 4 meses

    Dino Fluff is literally the cutest thing I've ever heard

  • Stegosaurus
    Stegosaurus Hace 4 meses +1

    interesting.

  • Paul Blanchard
    Paul Blanchard Hace 4 meses

    A brilliant video 👍

  • Cheetara ou Mario
    Cheetara ou Mario Hace 4 meses

    what if dinossaur fossil end? what if we excavate all the fossil? the paleontology end?

  • Prasad NSG
    Prasad NSG Hace 4 meses

    Hagraven necklace... Nice

  • Rakesh Baba
    Rakesh Baba Hace 4 meses

    The history of fish

  • ö. . ,
    ö. . , Hace 4 meses

    Pretty sure T-Rex wasn't roaring, no reptile does. It's more likely they have been tweeting and gurgling.
    And they also did this: esclips.com/video/oobaEVt31nA/vídeo.html

  • Dinoman9877
    Dinoman9877 Hace 4 meses

    And then new evidence made everyone realize: "Oh crap, T. rex is an 8 ton walking furnace with no way to shed all that heat and no way to groom itself or even others of its kind, which feathers demand because they get dirty easily and thus can cause disease if not properly cared for. It literally has no reason to keep its feathers because they were only a detriment to a predator specialized in killing large, powerful prey."
    Ya know, the arguments people supporting a featherless rex have made for years.

    • Akrian Mapping
      Akrian Mapping Hace 13 días

      Dinoman9877 feathers can also release heat, and they would be stage 2 feathers

  • Fraancisco Antonio Fuenzalida Acuña

    geology!!!!!!!!!!!!!

  • Christopher Meehan
    Christopher Meehan Hace 4 meses

    There's no denying the striking similarities (and presumably exceedingly close relationship) between coelurosaurian theropods and birds (i.e., maniraptorans, i.e., paravians etc etc.) However I am disturbed by this "incontrovertible evidence" that birds EVOLVED from warm-blooded, chicken-sized coelurosaurian theropods who were terrestrial and covered in "Dino-fuzz". There is some serious flaw in methodology, absence of rigorous science, and dangerously religious ethos driving this sudden "renaissance" in our understanding of avian evolution. Where are all the paleontologists practicing actual science (rigorous attempts at refuting REFUTABLE hypotheses, rather than "proving their theories")?
    The entire Prum model for feather evolution is literally Platonic in nature. Plato, while himself 'slightly' more clever than the simplistic misinterpretation/application of his thought experiments in "perfect forms"... This was literally the regression in natural philosophy that was responsible for the DARK AGES.
    It seems to me that the entire foundation of the "dino-to-bird" transition has been grossly misrepresented, and ironically those who offer very scientific refutation (attempts to reject this hypothesis) by pointing out Archaeopteryx is a BIRD (a primitive bird): some of these folks literally believe the world is 6000 yrs old. Why is no one calling the bluffs of tenure-hungry desperate nerds who apply a fervor and shortsightedness to evolution of flight and birds themselves with the same neurotic "cladistics" they might use to arrange their Star Wars figurines alphanumerically by episode and planet?
    This simply is not science, and it should cause no offense to a real scientist to point such fundamentals out in public. This is literally anti-science, by definition.

  • Chubbby C
    Chubbby C Hace 4 meses +1

    Am I the only one that was manly thinking of *PEACOCKS, FLAMINGOS, PELICANS, TOUCANS, AND DODO BIRDS* ?????

  • Purple Demon
    Purple Demon Hace 4 meses

    A feathered T-rex is even scarier to me

  • macsnafu
    macsnafu Hace 4 meses

    Dino-fuzz!!

  • San dro
    San dro Hace 4 meses +1

    Didn´t the flying reptiles have the same ancestors as dinosaurs? If so I would expect them to have feathers too.

  • Mylbari
    Mylbari Hace 4 meses

    seagulls are not to be appreciated!

  • KunoMochi
    KunoMochi Hace 4 meses +1

    One thing that always bothered me about illustrations of feathered dinosaurs is how they are almost always drawn with their arms hanging down. It seems to make more sense to have them tuck their feathered arms in the way that all current birds do, even flightless ones like emus and ostriches.

  • Valdagast
    Valdagast Hace 4 meses

    My cats hunt and eat dinosaurs. That's pretty awesome.

  • TechnoCraft
    TechnoCraft Hace 4 meses

    Where can I find a similar timeline as used in the video?

  • Shufei
    Shufei Hace 5 meses +4

    These new PBS mini shows are absolutely wonderful. I’m so glad you haven’t given up on hard science public education. Thank you!

  • S Ombie
    S Ombie Hace 5 meses

    I love her necklace but I’m worried that its real

  • Evert Bunschoten
    Evert Bunschoten Hace 5 meses

    Great video! learned a lot. I wonder however, how do feathers provide insulation while reptiles are cold blooded? Were these creatures transtioning from cold to warm blooded just like birds are today? If so, how did that happen?

    • Evert Bunschoten
      Evert Bunschoten Hace 5 meses

      Randall Wilks Thanks!

    • Randall Wilks
      Randall Wilks Hace 5 meses

      The fact that dinosaurs had feathers indicates they were not cold blooded. Evidence shows they had higher metabolisms than reptiles and were at least mesothermic.

  • MultiTomtom23
    MultiTomtom23 Hace 5 meses +2

    This "syno" dinosaur with the red/white tail feathers reminds me a lot of lemurs....it is really obvious that some of the dinosaurs used their feathers for communication... At least that's what I think =)...does someone know the name of this syno....raptorix....my first language is not English...so I struggled a little bit understanding the name...I mean I know it is Latin, but in English the pronunciation of latin words sound a bit different than in German...so if someone could write it out for me that would be really nice...I would like to learn more about it!!!
    Great video again! I love this channel...it is very informative and presented in a way that glues me to the screen every time =)

    • Robin Chesterfield
      Robin Chesterfield Hace 4 meses +1

      Ohmygod, YES, that's totally what it reminds me of! Specifically the ring-tailed lemur (for obvious reasons). Incidentally I think lemurs are the most adorable primates, which possibly part of the reason I want to hug a fluffy sinoseropteryx. :P Also the "sino" part is from the ancient name for China, where they were first found. :)

  • ChrisC
    ChrisC Hace 5 meses +3

    As soon as it was recognized that birds were descended from a clade of dinosaurs, it ought to have been immediately clear that other members of that clade, and very likely other related clades, must themselves have been feathered. Archaeopteryx has developed flight feathers. These are specialized, complex structures that cannot have arisen all at once. They must have developed from something simpler.
    This isn't usually brought out, but I very much doubt that paleontologists were all that surprised when evidence of feathers in all sorts of dinosaur clades were noticed.

    • ZemplinTemplar
      ZemplinTemplar Hace 2 meses

      Feathered dinosaurs were speculated about and depicted in the paleoart of non-fiction books as early as the 1970s. I can't seem to find the article at the Love in the Time of Chasmosaurs blog, but its previous iteration had a whole article about just such paleoart, and related topics.

  • Random Human
    Random Human Hace 5 meses +1

    Amazing and educational video! I showed this to my mom (because I am obsessed with dinosaurs) and showed her this so she understands more about our prehistoric fluffy friends.

  • Diana Gibbs
    Diana Gibbs Hace 5 meses

    Is it me, or does the black Coelurosaur look like Toothless from How to Train Your Dragon?

  • Simon Englund
    Simon Englund Hace 5 meses

    Best video on ESclips with the time 10:01

  • Leo Schenk
    Leo Schenk Hace 5 meses

    Why were there 4 winged birds

    • Leo Schenk
      Leo Schenk Hace 5 meses

      Randall Wilks yes, sorry, let me rephrase, I was wondering if there was a theory as to why they developed with 4 wings, not saying that they actually were birds. But I think that has been roughly answered.

    • Randall Wilks
      Randall Wilks Hace 5 meses

      They were not birds. Dinosaur evolution did not stop with birds. Evolution is an ongoing series of natural experiments where what works gets perpetuated and those that don't, perish. Dromeosaurs like microraptor and its relatives were successful for a time as there are a fair number of them in museum collections. Not certain how well they could fly, but they could certainly glide.

  • Sean Kennedy
    Sean Kennedy Hace 6 meses

    If dinosaurs had feather then why do we have chickens then hmmm?

  • Phane
    Phane Hace 6 meses

    I always assumed because of dinosaurs size finding coverage from the sun would be difficult. Feathers would act like a heatsink dissipating body warmth through the stalk and out the bristles.

    • Randall Wilks
      Randall Wilks Hace 5 meses

      If you look at large mammals in warm climates, they don't have much hair as they have more problem dissipating heat than retaining it, so even though most theropods had feathers, they would be less likely on an adult T-Rex. Feathers on birds are not just for insulation, they are used for display as well, so perhaps they retained some for that purpose.

  • Alexandre Souza
    Alexandre Souza Hace 6 meses +1

    Little
    Fallen
    Seriphim
    Dragons
    &
    Griffins

  • Ai Fan
    Ai Fan Hace 6 meses +1

    Remake of Jurassic Park? Feathery dinosaurs are so cuddly ♡