Birds Are Dinosaurs, Why Do Birds Sing From the Heart?

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Birds make their sound using called a syrynx. They're the only animals that have these. The left and right sides of the serynx do not have to do the same thing at the same time. This means birds can produce multiple dominant pitches at thesame time. There are some thrushes in particular, that their primary songs sound like t birds singing together.

They probably didn’t roar like lions. Their real voices were likely much, much weirder. We asked scientists to help us recreate these strange, extinct sounds.

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