User blog comment:Dinosaurus1/Let's talk about Clash of the Dinosaurs/@comment-33613830-20171126170841/@comment-23825763-20171126204011

I'm not sure if either of these have been proven since the show aired, but I do have two inaccuracies from Clash of the Dinosaurs.

1. The show claims that Quetzalcoatlus could see in ultraviolet like modern birds. This has no proof behind it as of yet.

2. The show claims that Parasaurolophus was able to use ultrasound produced by its crest as a meathod of defense. Again, this has no proof behind it as of yet. However, Clash of the Dinosaurs isn't alone on this one, as another documentary, Prehistoric, also claimed this without evidence. It didn't even call the obvious Parasauruolophus by name. It just called them "hadrosaurs".