Around a week back caught the bus up to the Mangere Waterworks, this time armed with a pair of binocs and the correct tide timetable for Mangere, arriving there at around the peak of high tide. Arriving around the Creamery Road entrance, the previous mudflats and the like had completely filled up, with the lake seemingly overflowing with grey teal, a nice lifer and a species which I couldn't see properly on my last trip here. Also saw a pair of pied stilt on the shoreline.
Moving up to the lagoon, which was sort of fenced off the last time I went, instead of rushing to the waterworks, I went up to visit the shellbanks to try and tick of some lifer waders. Reaching the first bit of bank with shaders on it was a subpar viewing, although it was sort of interesting seeing the spectacle of just a writing grey mass of birds, and I got to see one flock flying, it wasn't really anything. Because they stay so far back and my binocs didn't have that much zoom, so the only real bird that I could pick out and id from the mass was a godwit, I'm certain there were probably knots and other waders in those flocks, I just couldn't see well enough so not counting anything. Walking further up to the next set of shellbanks, I heard a soft pipping next to me, swiftly turning around I was awarded with superb sightings of an NZ Dotterel! Even allowing me to walk almost right next to it on the bit of coastal heath straggle hidden behind a boring plain of mown grass surrounding the entire path, it stationed itself upon. Although it's a shame I can't count it on my year list it by far made up for the abysmal sighting of them back in Whangarei.
Walking all the way up to the final shellbank where the bird hide is located, I made probably the best discovery of the whole trip, as I was walking I'd always thought the gulls were looking a little odd, and when I reached that bank the realisation finally hit me after seeing a juvenile up close, I was seeing Black-Billed Gulls! At first I was worried I was seeing aberrant long beaked red bills, and they didn't really look all that unique, until seeing an adult soar past my head. An absolutely striking colouration, a long deep black bill with deep crimson legs and the beautiful eye ring that characterizes NZ gulls, although the features I focused on and which finally made me happy to count them were shared by the much commoner red billeds, they simply looked better on the black billed, but that probably has to do with the perceived rarity factor. Getting to the bird hut, I was still not able to pick out the shorebirds and it was really quite poor and dissatisfactory since the viewing benches and windows were weird, with the benches being on weird angles, and the place which has an actually nice window having no benches forcing you to ty and crouch/kneel in a weird way which still yields no birds seen. By far the greatest thing I saw there was a welcome swallow nest, with three small chicks all jumbled up and within arm's reach.
I'm almost certain that a few silvery birds I saw on the way to the waterworks were chaffinch but considering they were such poor sights of what would've been a lifer for me, they go uncounted. Also on the way to the waterworks I was dive bombed by pied stilts, again! So I think the stilts here just really hate humans or something, as I was casually walking on the path so I'm almost certain I wasn't in range to disturb them, but it makes for great viewing and photo opps., as 5 or so hover in the air and dive right past you. Also saw a trio of pied shags fishing in the culvert pipes, great seeing them hovering around in the flow of the pipes and constantly dipping down and resurfacing always in view.
Arriving in the waterworks I was able to immediately tick off black swan and dabchick, also saw a ruddy tinged really weird looking duck but it may have been a scaup. Spent a solid 10 or so minutes trying to find a shoveler but it was unsuccessful by this point it'd been a few hours and my feet were giving out so I decided to call it quits and exited, seeing a roosting NZ scaup on my way out which nicely decided to give walkaway views. After returning home I discovered I got a quite nasty sunburn on the entirety of the nape of my neck, totally my fault for deciding not to wear a hat or apply sunscreen before going out to bird at the middle of noon, but after a couple of days it's entirely healed up. Overall I'd say the trip was at least better than my last visit, and I'd like to try and visit here again when it's low tide, to get to see some shorebirds foraging also really want to try and get out there at around Feb-June as I really want to find myself a wrybill.
Birds
33. Pied Stilt (Himantopus leucocephalus)
34. Grey Teal (Anas gracilis)
35. Bar-tailed Godwit (Limosa lapponica)
36. Black-Billed Gull (Chroicocephalus bulleri)
37. European Goldfinch (Chloris chloris)
38. Black Swan (Cygnus atratus)
39. NZ Dabchick (Poliocephalus rufopectus)
40. NZ Scaup (Aythya novaeseelandiae)
Inverts
10. Passionvine Hopper (Scolypopa australis)