Does this parrot know nothing?
We know about zero, does this parrot?
Researchers explore whether parrot has concept of zero - www.world-science.net
Has a parrot has developed a numerical concept that mathematicians failed to grasp for centuries: zero.
Researchers explore whether parrot has concept of zero - www.world-science.net
Has a parrot has developed a numerical concept that mathematicians failed to grasp for centuries: zero.