This suggests that recognizing geometric shape regularity may be deeply ingrained in evolution, and could be more common in the animal kingdom than we've realized. "We humans – based on our ...

Crows are able to look at a handful of four-sided shapes and correctly distinguish those that exhibit geometric regularity ... they'd have to peck on the shape that was different from the others.

The more regular the angles and sides of the shape, the more accurate the detection of the outlier element by the crows. "This basic intuition in crows, their ability to grasp geometric properties ...

Here are their edited responses. My favorite shape is the loop, a circle with all geometric information stripped away, leaving only a free-form one-dimensional object. In fact, there’s a sense ...