unless they have mistaken your finger for a piece of meat and are trying to twist off a small piece with the very tip of their beak, the only way to make them let go is to walk inside, as you go through the door they finally let go.

@Rugglesby I didn't have that problem. It was as if it realised that my finger wasn't food - just sort of went clack clack and then let go. I once saw one with a 3' - 4 ' long snake about an inch in diameter at the head beating it to death against the gum tree. Guess I was lucky.
Also used to get the possums come to be fed. One woman went and let it bite her finger! ... Maybe she had had to much gin in her tea! My neighbour was trying to grow creepers up his veranda but the possums kept nipping the new shoots off. To fix it he laid copper wire along the top rail and plugged it into the 240 volt mains. All was well until one morning he came out of his bedroom threw his arms back admiring the view and deeply inhaling ... then lent forward palms flat onto the live railing. After 30 years of installing 40,000 volt transmission cables he was used to 240 volt shocks but from then on it was never plugged in again!

have the occasional substitute on youtube

Along with magpies a sound that I will always associate with Australia.

looks like the uproariously laughing kookaburra to me.

if we haven't seen them for a bit, they get a treat, they will sneak up behind me, I don't hear or see them and make this kind of purring noise next to my ear. I like that they mostly fend for themselves, but fro instance after the fire I was so relieved that they were ok and came back, sadly I am pretty certain they would have lost some eggs or chicks.