They are amazing birds, very deserving of the name "Clown of the Mountains".
I was having a burrito on manly wharf a long while back, a seagull just lands on the table and death stares me...i felt uncomfortable and moved, because i know they will try and take my food off me!
Cockatoos are worse and will flip the lid of a wheelie bin if in the mood. Crows will as well if you overfill and the lid is not shut properly.
They are smart!
One group will entertain the tourists (in mountain huts in the back country) by putting on ammusing displays of acrobatics and hijinks
The other team use razor sharp claws and beaks to open thir packs and get to all the interesting stuff inside