Large, creamy-white head
Dark brown stripe through each eye
Brown stripe over the top of the head
Very large bill, black on top / bone coloured on bottom
Brown wings and back
Sky blue spots on shoulders
Rusty reddish-orange tail, with dark brown bars
I don't know about gum trees but Kookaburras certainly like to sit on hydro wires. We spotted at least one of them each day as we drove around Tasmania. I never heard any laughter though. They were all sitting quietly on their perch looking out over the world.
Learn more about the Laughing Kookaburra.