Stilt vs duck!

For some reason this pied stilt took exception to this duck! Other ducks were fine, ducklings were fine, pukekos were fine - brown teal ducks weren't fine!

So with a lot of shrieking and dive bombing they got driven off.

As far as I could see the stilts didn't have young so I'm not sure what the issue was, but a lot of energy was being used to deal with it, and a lot of noise.