--- title: Dinosaurs May Have Cooed Instead of Roared, Scientists Find description: Not only did some dinosaurs have feathers, but according to new research the prehistoric creatures may have emitted coos canonical: https://time.com/4402698/dinosaurs-coo-pigeon-roar/ author: Tara John article:opinion: false article:content_tier: free article:published_time: 2016-07-12T15:00:03.000Z article:modified_time: 2026-02-22T23:11:49.919Z article:section: Science og:title: Dinosaurs May Have Cooed Instead of Roared, Scientists Find og:description: Not only did some dinosaurs have feathers, but according to new research the prehistoric creatures may have emitted coos og:url: https://time.com/4402698/dinosaurs-coo-pigeon-roar/ og:site_name: TIME og:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt8071b3afe89a3d81/69889b92656a3fc5debcc3fa/dinosaur-roar-coo.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 og:image:width: 3000 og:image:height: 1688 og:image:alt: A man reacts to the Eden Project's life-size juvenile Tyrannosaurus rex that has been brought as a preview to the nearby attraction's "Dinosaur Uprising" opening this summer on June 9, 2016 near Wadebridge, England. og:type: article twitter:card: summary_large_image twitter:title: Dinosaurs May Have Cooed Instead of Roared, Scientists Find twitter:description: Not only did some dinosaurs have feathers, but according to new research the prehistoric creatures may have emitted coos twitter:image: https://static.time.com/v3/assets/bltea6093859af6183b/blt8071b3afe89a3d81/69889b92656a3fc5debcc3fa/dinosaur-roar-coo.jpg?branch=production&width=1200&quality=75&auto=webp&crop=16:9 ---  # Dinosaurs May Have Cooed Instead of Roared, Scientists Find > Sponsored content. 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Future Proof is free at time.com/newsletters. ### Sources * TIME Newsletters: [time.com/newsletters](/c/time-nl-futureproof-2026q3/newsletters?i=60ad2ef3-1280-4603-a1b7-d5323a206a09&cr=time-nl-futureproof-2026q3-v1) by [Tara John](https://time.com/author/tara-john/) ## Tara John Jul 12, 2016 3:00 PM UTC  A man reacts to the Eden Project's life-size juvenile Tyrannosaurus rex that has been brought as a preview to the nearby attraction's "Dinosaur Uprising" opening this summer on June 9, 2016 near Wadebridge, England. A man reacts to the Eden Project's life-size juvenile Tyrannosaurus rex that has been brought as a preview to the nearby attraction's "Dinosaur Uprising" opening this summer on June 9, 2016 near Wadebridge, England. Matt Cardy—Getty Images by [Tara John](https://time.com/author/tara-john/) ## Tara John Jul 12, 2016 3:00 PM UTC Not only did some dinosaurs [have feathers](http://time.com/3961931/science-dinosaur-velociraptor-feather/), but according to new research the prehistoric creatures may have emitted coos or mumbles instead of mammalian roars. After a comprehensive review of vocal data from bird and crocodile species, scientists from universities in Arizona, Texas, Utah and Canada found that dinosaur sounds may be what they call a “closed-mouth vocalization.” According to the [research published in _Evolution_](http://onlinelibrary.wiley.com/doi/10.1111/evo.12988/abstract), a similar example would be the coos of a dove, in which sounds are emitted through the skin and neck area while the beak is kept closed. “Looking at the distribution of closed-mouth vocalization in birds that are alive today could tell us how dinosaurs vocalized,” Chad Eliason from The University of Texas Jackson School of Geosciences and the study’s co-author said in a [statement](https://news.utexas.edu/2016/07/11/dinosaurs-may-have-cooed-like-doves). “Our results show that closed-mouth vocalization has evolved at least 16 times in archosaurs, a group that includes birds, dinosaurs and crocodiles. 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