The Colors and Personalities of Gouldian Finches

Scientists studying the Gouldian finches of Australia discovered that the bird's colorful head actually correspond to their personalities:

Scientists from Liverpool John Moores University and The Royal Veterinary College investigated the "highly sociable" Australian birds.
The team set the finches a series of behavioral tests to understand the purpose of their bright appearance.
They found that red-headed finches were more aggressive, while black-headed birds were bolder and took more risks.

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