Bangkok City Birding

On Sunday 22nd May I finally got around to taking one of the Wildlife Encounters Thailand trips to look for Bryde's Whales in the inner Gulf of Thailand.
The boat goes out from Khok Kham, just about a ten minute drive from where Bangkok's closest Spoon-billed Sandpipers usually spend the winter (and given that the boat trips run through from now until January, birders could probably combine  the two)...

On my way back from Cha-am I visited Laem Pak Bia, focusing my time on the Royal Project.
On my way into the project I came across a showy group of Blue-tailed Bee-eaters, and soon afterwards I located a full breeding plumaged Indian Pond Heron which was flushed by a motorbike before I could get any photos of it....

On Sunday afternoon I had to drive to Cha-am which is about 35km south of Laem Pak Bia.  Given this proximity it seemed rude not to stop off for a spot of birding along the way!
My first stop was at KM 55 on Rama 2 Road (the main road heading south west out of Bangkok).  This road has saltpans right next to it in this area and I have explored here several times in recent months, having found a flock of a couple of hundred Great...

One of my last bashes of the spring around the patch produced only two migrants - the first being a splendid and very showy Dark-sided Flycatcher (pix below), with the other an Arctic Warbler in song.
Having latterly examined my sound recordings of this bird and the one I heard singing on 15th April and comparing them (by ear) with various recordings on Xeno Canto it seems to me that they are clearly closest to Phylloscopus borealis transbaicalica...