What bird is it?

Hi everyone.. I am trying to I.D a couple of new birds that have been hanging around my garden latley.

I will try to describe it the best i can. Looking at it first it looks similar to the a Bell miner ,except it has a violet/purple breast neck and is Olive green. The legs and beak are very bright orange. The noise they make may be a give away as they sound like Ducks! yes sounds crazy but they make a duck like noise. Very pretty bird to look at. I first thought maybe it was a kind of grass parrot but it does not have a parrot beak. I have noticed them hanging around close to where the Indian M's are nesting.
I hope my description isn't to vague.

Thanks