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Most people don't have to travel too far to find some kind of dinosaur exhibit. In addition to touring shows like "Walking with the Dinosaurs," there are museums with dinosaur displays all over the world. But if you want to get a really good look at a dinosaur, you may not have to travel at all. Simply look at any bird you can see outside your home.
The prevailing scientific view is that whether you're seeing a hummingbird, a robin, a flamingo or an ostrich, you're seeing a descendant of dinosaurs. In fact, some scientists go so far as to call birds avian dinosaurs and to call all other dinosaurs non-avian dinosaurs.
The thought that a giant carnivore like Tyrannosaurus rex has something in common with an ordinary wren might seem foreign or even far-fetched. This is especially true since people often describe dinosaurs as reptiles. But the idea that dinosaurs became birds has been around for more than 100 years. In 1868, Thomas Henry Huxley described evidence that birds evolved from dinosaurs. This is currently the most widely-held scientific theory about the origin of birds, and it's helped shape today's view of dinosaurs as swift and agile instead of plodding and clumsy.
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