Charlie Parker is an African Gray Parrot. He entered the life of Debby and Michael Smith three decades ago when, at the insistence of their young son, Eli, they brought him home from a downtown Manhattan bird shop. He has been an integral, and voluble, member of the family ever since. Charlie's vocabulary is astonishingly diverse and colorful. He can be demanding, squawking imperiously "Clean my cage" or "Want some water." He can be brutally...