Book excerpt: Charlie Parker is an African Grey Parrot. He entered the life of the Smith family three decades ago when they first encountered him in a downtown Manhattan bird shop and found him so irresistible, they had to bring him home. Charlie is many things in the Smith family, articulating them all in an astonishingly diverse and colorful vocabulary. He can be demanding, squawking imperiously "Clean my cage" or "Want some water." He can be very direct, warning an aggressive business associate who had been yelling at Debby "I'm going to kick your ass, you sonofabitch" He can be mischievous, making meowing noises to a neighbor's confused dog in the elevator. He is a survivor, who ended up recovering on an IV after the collapse of the World Trade Center filled the Smiths neighboring apartment with toxic dust. He is often the entertainer, with a songbook that extends across the opening bars of "Home on the Range" and "The Yellow Rose of Texas." Most of the time he is affectionate, as when he hangs upside down against the side of the cage and asks for his tummy to be tickled. In hearing Charlie's tales in this charming book, we come to realize that parrots are intelligent, sociable and loving creatures, to an extent that, as the renowned avian scientist Professor Irene Pepperberg insists in her introduction, they cannot meaningfully be owned by humans but should rather be enjoyed as companions.