Aún no tenemos significados para "grey parrots".
1African grey parrots have the brain capacity of a 4- to 6-year-old.
2Staff at the park hoped the parrots would pick up natural calls from the other African grey parrots.
3Significantly, the grey parrots appeared to understand the nature of the task, as opposed to acting out of playfulness.
4It is true that there was no lack of the common grey parrots with crimson tails, but these were no novelty; Jack
5On average, African grey parrots live up to 45 years in captivity and 22.7 years in the wild.
6In one corner, on a bench against a wall hung with matting, grey parrots in tall cages were being fed by a slave.
7Only two creatures on God's Earth can make that sound: African Grey Parrots and fifteen-year-old female humans.
8A British zoo has had to separate a group of five African Grey parrots because their language was too strong for younger visitors.
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