Alex the counting parrot was even smarter than we thought

Alex the gray parrot was no ordinary bird. The subject of a thirty-year investigation into avian cognition, by the time he died in 2007, numerous scientific publications had pointed to Alex as proof that a bird's mathematical abilities could be on par with — and even exceed — those of chimps and other non-human… » 2/22/12 7:00am 2/22/12 7:00am