irene pepperberg trained an african grey parrot to answer spoken questions with spoken words.
which researcher trained an african grey parrot to answer spoken questions with spoken words?
irene pepperberg
section::::behaviour.:intelligence and learning.:sound imitation and speech.





















































many parrots can imitate human speech or other sounds. a study by scientist irene pepperberg suggested a high learning ability in an grey parrot named alex. alex was trained to use words to identify objects, describe them, count them, and even answer complex questions such as "how many red squares?" with over 80% accuracy. n'kisi, another grey parrot, has been shown to have a vocabulary around a thousand words, and has displayed an ability to invent and use words in context in correct tenses.
parrot
bullet::::- grey parrot, congo grey parrot, african grey parrot or congo african grey parrot ("psittacus erithacus", previously "psittacus erithacus erithacus "): this is the nominate species, larger than the timneh at about long, with light-grey feathers, cherry-red tails, and an all-black beak. immature birds of this species have tails with a darker, duller red towards the tip (juniper and parr 1999) until their first moult, which occurs by 18 months of age. these birds also initially have grey irises, which change to a pale yellow colour by the time the bird is a year old. the congo grey parrot is found on the islands of príncipe and bioko, and is distributed from southeastern ivory coast to western kenya, northwest tanzania, southern democratic republic of the congo (drc), and northern angola. in aviculture, it is often called a "cag".
psittacus