Featured series 
Tag: shapes
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Nation & World
The parrot knows shapes
Despite a visual system vastly different from that of humans, tests showed the bird could successfully identify both Kanizsa figures and occluded shapes. The findings suggest that birds may process visual information in a way that is similar to humans.
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Nation & World
Polly want a vocabulary?
Irene Pepperberg, best known for her work with an African grey parrot named Alex — whose intelligence was estimated as equal to that of a 6-year-old child — recently relocated her lab to Harvard, where she continues to explore the origins of intelligence by working with birds.
