re: Speaking of African Grey Parrots....
A friend of my sons' has one, "Cowbird"....he is quite a bird!...He taunts the pet Siamese, Vognar.
Cowbird will call "Vognar...Vognar"...with the usual lilt in the voice that a human uses when calling someone...that silly cat goes looking for the voice...everytime. Cowbird then swoops down off of his perch and lands on Vognars' head and starts pecking him...Vognar freaks and off they go...I would love to see that!