These guys come rat-a-tat-tatting on the windows around 5pm some afternoons and boy what a noise they make. If it's quiet indoors at the time, it can give you quite a surprise/fright. When you haven't heard them in a while and their strong beak starts attacking the glass, you think there's some big bouncer at your front door!
and finally, this rather quizzical glance...
Later addition to this post:
Madame Lotte Lehmann, a video from 1938 when she was introduced to the kookaburra; it’s really worth watching. Enjoy!