The interplay of difference and similarity between this and BioShock the original is fascinating.

FORBES: BioShock Infinite Preview - Oh, Amber Waves of Pain

Alex (his name supposedly an acronym for Avian Learning Experiment) eventually learned the names of about 50 objects, knew the numerals from one to six, could perform simple addition and used categories such as similarity and difference, shape, colour and material.

ECONOMIST: Alex the African Grey