The bird has been here for a few weeks now and seems happy enough amongst the Tufted Ducks, however it doesn't tolerate any gulls and several times I observed it attacking the gulls on the pool.
The bird seemed to spend time in the centre of the pool either preening or loafing and goes to the far end to forage and feed.
The best bet is to sit low on one of the fishing platforms on the eastern corner and wait for the bird to come to you.
Still, despite the poor images it was great to see the bird and it's diagnostic features such as it's white speculum and distinctive white secondaries up close.