Researchers explore whether parrot has concept of zero

July 2, 2005
Special to World Science

Researchers are exploring whether a parrot has developed a numerical concept that mathematicians failed to grasp for centuries: zero.

Oddly, it seems he may have achieved the feat during a temper tantrum, the scientists say.

Although zero is an obvious notion to most of us, it wasn’t to people long ago. Scholars say it came into widespread use in the West only in the 1600s; India had it about a millennium earlier.

Yet Alex, a 28-year-old Grey parrot, recently began—unprompted—using the word “none” to describe an absence of quantity, according to researchers at Brandeis University in Waltham, Mass.

Alex thus possesses a “zero-like concept,” wrote the scientists. More...