Here are a couple of photos of a bird that was new to me at the time, a Striated Heron, Butorides striata.

Ian Montgomery of Birdway, who was kind enough to identify it for me, mentioned that it is rather similar to a Black Bittern (my first guess) and that Striated Herons are often more reddish brown in NQ than elsewhere.

I took these photos eighteen months ago but mislaid them. In the circumstances, a further delay of a couple of weeks doesn’t seem to matter so I have set up this post (and a few more) to appear automatically while I am away on holiday, discovering unfamiliar parts of SE Asia.
Another one in the same area, just a few days ago: http://www.flickr.com/photos/malcolm_nq/8146894374/