@MrQuantumInc

To be fair, even if they sounded like birds it would be at vastly lower pitch. It would be like the difference between a housecat's meow and a tiger's growl.

@xodiaq

This infers that some Dino’s could feasibly mimic like Parrots. That would be a creepy hunting adaptation…

@Trans_kirby_enthusiast

When he said “More complex sounds” I just imagined a dinosaur speaking fluent Bulgarian

@Sthuont

Emus and Cassowaries have really interesting vocalisations that are very guttural with booming reverberation that sounds very much like something you'd expect from a non-avian dinosaur.

@user-pt1cz4ot1e

I thought this was already a thing decades ago.  I distinctly remember a guide in the Museum of Natural History talking about how they got the sounds wrong, and how they likely had a wide range of sounds for communicating.

@Im-Not-a-Dog

A T.Rex running up and screaming at you like an eagle would be horrifying, and I am 100% down for that.

@robertshindeliii

What, no example of what they actually might have sounded like? I feel cheated.

@VXGaming

With so many different speices I would assume they all had different vocal cords/ larynx. Going from Rex to Archosauria would be like comparing a crocodile to an armadillo.

@phowbow3161

Imagine a T-Rex skipping through the landscape while chirping a lovely song 🎵😆

@alphalunablue8918

Look up slowed down videos of birdsong you'll find a good amount with the sound pitched down to match. Any time I wanna hear a dinosaur, it's what I do

@NY_7

They never got the sound wrong in Jurassic Park. They said numerous times that they had no clue what dinosaurs sounded like at the time and decided to come up with a roar that they liked. 

Now, when you see and hear an Eagle in a movie or tv show, thats wrong. The bald eagle scream heard in most movies and television shows is actually the call of a red-tailed hawk.

@ritoplsfixclient1667

Ya'll acting like there aren't birds in modern time that sound like they came straight out of hell. Now imagine a dinosaur.

@alkatron768

"So this Ankylosauridae probably didn't sound like we imagined the T-Rex would sound like"

@anukepin893

Birds are just weak dinosaurs at this point

@Austroraptor09

The one you showed is Tarchia from prehistoric planet pinacosaurus was smaller and a bit flatter

@OmnipotentNoodle

Jurassic Park actually brought on an expert to help them design the sound effects, but when he told them that they probably sounded more like really deep birds, they didnt like it because they didnt think it wouldnt be as scary or exciting as mammal roars, lol. I think there's an AppleTV "Nature Documentary" about dinosaurs that does a really good job capturing the essence of these incredible, alien sounds. 

P.S. Some dinosaurs instead sounded like really deep crocodile rumbles, which btw are terrifying. Go ahead and google crocodile noises and then imagine those reverberating through a misty valley from kilometers away.

P.P.S. Brontosauruses didnt have much in the way of vocalization. They just sorta hissed, lmao.

@KeithOlson

T-Rex opens its mighty maw full of razor-sharp teeth: "TWEEEEET!!!!!"  :rofl:

@hadorstapa

Another arrow in the quiver of Dr Grant's speech about dinosaurs being birds.

@Tekros

It's also likely that that dinosaurs didn't open their mouths to vocalize. Instead they likely used closed mouth vocalizations similar to many birds and reptiles.

@blackdog6969

Dinosaurs having similar vocal structures to birds could make for an awesome horror game. Imagine having a group of raptors trying to lure you by mimicing a human, like birds