BirdingNZ.net

Saw a sulphur-crested cocky on Fairy Springs road, Rotorua on Wednesday morning, but i think it was just an escapee so not of much use to you guys!

As for rooks, as JFDillon has mentioned he has a decent spot, otherwise i know south of Cambridge Russ Cannings has reported some, and i think some have been reported near Taupo?

There is a spring near Putaruru, Blue Spring I think. Lots of dunnock, easy access and some rook as well.

No luck with Galah in the Mangatawhiri area, but I found a possible night roost of Sulphur-crested Cockatoo in Lyons Rd last week. One morning there were at least 29 birds that flew off in two groups in opposite directions (one group of exactly 13 and one of at least 16, partly concealed by the tree).

Cheers,
Matthias

Best luck for Cockies are around near the Hunua Ranges out Miranda way and the Waitakere Ranges near Auckland. However they are controlled by the regional council so they may be gone in a few years. Good Luck!

Saw a rook fly over the Taupo Bungee yesterday.

While driving between Ngaruawahia and Te Kowhai this morning, we saw a flock of around 15 Sulphur-crested cockatoos flying over the road. Not sure how significant this is on a regional level, but I hadn't seen a cockatoo all year previously so I was pretty excited.

Edit: a flock of 12 came through the camp in Nga about a week ago as well, so it seems like the flock may be hanging around for a while.
Cheers,

Sulphur crested Cockatoos are currently roosting in a small patch of bush behind a farm house in between Makaewa road and Toft road, Kaiaua road, Mangatawhiri.
Counted 17 last week

Saw a flock of about a dozen cockatoos this morning flying over Highway 22, they were heading north, just south of the intersection with Otorohaea Trig Rd (north of Waingaro and east of Te Akau in the western Waikato). Only saw them very briefly, immediately stopped and turned around, but couldn't relocate them. Only about 15km from the birds you saw Liam, though I suspect it's probably a separate flock.

Are the majority of the sightings of the cockatoo are found on the west coast of NZ? D
Does that go hand in hand with the suggestion that they could possibly be a "native" self introduced species, weren't the Black swan labeled introduce for a while to become a, (according to nzbirdsonline) native species? suggesting that they self-introduced at the same time as they were being introduced by the acclimist society.

Be interesting to know what make up of the population are cage escapes/introduced vs birds blown in from Aust.... If there are any supporting evidences that suggests that there are possibilities for these birds to make it across the tasman