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DetlefK

(16,423 posts)
Tue Jul 12, 2016, 03:46 AM Jul 2016

Dinosaurs didn't roar. They hummed.

http://gizmodo.com/dinosaurs-more-likely-cooed-than-roared-1783475658

Researchers from the University of Texas did a comprehensive review of the vocal organs of birds and the kinds of sounds they made. Then they matched those up with the vocal organs found in fossilized dinosaurs for a paper coming out next month in Evolution. The results, they say, suggest that many dinosaurs were far more likely to vocalize with a closed-mouth—perhaps, a disapproving “hmm” or a more pensive “umm”—than with a full-throated roar.




Now, if you think that a bird cannot sound threatening...





An for comparison an alligator:

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MillennialDem

(2,367 posts)
2. Still deep, scary, and bestial. I remember recently not thinking about if dinosaurs roared and
Tue Jul 12, 2016, 09:42 AM
Jul 2016

coming across an article that said they almost certainly didn't and made humms and chirps. I thought about a t-rex making chirps that a tiny little bird makes (high pitched). I obviously knew that wasn't right.

This gives a better idea.

Warpy

(110,900 posts)
4. Hooray! Another silly myth dispelled
Tue Jul 12, 2016, 02:59 PM
Jul 2016

along with the uniformly green lizard skins. We now know they sported proto plumage and were likely quite colorful.

BumRushDaShow

(127,288 posts)
5. There are some YouTube videos with an example theorized sound
Tue Jul 12, 2016, 03:07 PM
Jul 2016

from one species (a Parasaurolophus) that they had a complete skull of and blew air through to do a simulation.

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