text: The Palm Cockatoo ( Probosciger aterrimus ) , also known as the Goliath Cockatoo , is a large smoky-grey or black parrot of the cockatoo family .
simplified: The Palm Cockatoo ( Probosciger aterrimus ) ( also known as the Goliath Cockatoo ) is a black or dark-gray parrot of the cockatoo family .