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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

Ravens are known for their exceptional intelligence.

In fact, they're sometimes referred to as flying primates.

We knew they are very smart, but nobody ever had really tested this using a big and comprehensive test battery, which also then really enabled us to say,

is their cognitive performance similar to those of great apes or nots?

Zemoneipika is a cognitive scientist at the University of Osnabrook in Germany.

She and her colleagues wanted to see how ravens would measure up to primates across a wide

array of tasks. So they subjected eight ravens to something called the primate cognition

test battery. It's a series of 33 different tasks designed to assess various aspects of

intelligence among primates. For example, one test is a game of cups. You may have seen it a fair.

You put an object under one of three

cups, move the cups around, and then guess which cup the object's under. Other tasks tested

the raven's ability to determine cause and effect or to understand different quantities.

Peanuts were a popular test item to keep the birds motivated. Overall, the researchers found that

four-month-old ravens, which you might think of as

teenage ravens, did just as well on most tasks as adult chimps and orangutans, except on

tests of spatial skills.

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