This is undoubtedly a proud moment for crows and the humans who were testing them. Cognitive neurobiologist at the University ...

How are they different? They both have four sides ... Look at how these shapes have been sorted. Remember a quadrilateral is any shape with 4 straight sides. Now the shapes have been sorted ...

Polygons are multi-sided shapes with different properties. Shapes have symmetrical properties and some can tessellate. Loci and constructions - Edexcel Loci are a set of points with the same property.

A screen displayed six shapes, one of which was different from the others ... and other various quadrilaterals. The birds, though, were undaunted. The crows “were able to spontaneously ...

from irregular quadrilaterals? So he had a couple crows learn a new game. The birds would see six shapes on the screen, and they'd have to pick the one shape that was different. NIEDER ...

"Initially we presented some very obviously different figures ... started showing them sets of shapes that included squares, parallelograms, or irregular quadrilaterals. Sponsor Message The ...