Analysis of information sources in references of the Wikipedia article "亞歷克斯 (鸚鵡)" in Chinese language version.
Science's best known parrot died on September 6th, aged 31
Alex, a parrot that could count to six, identify colors and even express frustration with repetitive scientific trials, has died after 30 years of helping researchers better understand the avian brain.
Alex, a parrot that could count to six, identify colors and even express frustration with repetitive scientific trials, has died after 30 years of helping researchers better understand the avian brain.
Science's best known parrot died on September 6th, aged 31