Posthuman Blues

African Gray Parrot Grasps Zero Concept

"Although his brain is the size of a walnut, scientists say Alex's ability to understand the concept of zero is amazing, as humans do not typically grasp it until the age of 3 or 4.

"According to Irene Pepperburg, who led the reasearch, Alex possesses a zero-like concept, which although different to ours, still demonstrates his ability to understand an absence of quantity."