She believes that Alex may have had his wings clipped when he was young , which could have prevented him from learning to fly .
Animal psychologist Irene Pepperberg bought Alex at a pet store while a researcher at Purdue University .
Irene Pepperberg believes that Alex may have had Alex 's wings clipped when he was young , which could have prevented him from learning to fly .
Animal psychologist Irene Pepperberg bought Alex at a pet store while a researcher at Purdue University .