http://medicalxpress.com/news/2016-06-te...brain.html
Birds have more densely packed neurons in the front part of the brain that are associated with intelligence than mammals whose brains are comparatively sized.
Quote: Parrrot and songbird brains, for example, contain about twice as many neurons as primate brains of the same mass and two to four times as many neurons as equivalent rodent brains.
Birds have more densely packed neurons in the front part of the brain that are associated with intelligence than mammals whose brains are comparatively sized.