I think many have seen this bird and being discussed in previous threads, although there has not come to a conclusion.
But according to all of those who have seen it, the bird is rather big (people have said it was larger than bluetail, dark-sided flycatcher, etc.) and would rule out Small Niltava. However according to my observation, the bird was probably not large enough for a Large Niltava which should be 21~22cm according to available references.
Some has suggested Rufous-bellied Niltava.
http://hkbws.org.hk/BBS/viewthre ... &extra=page%3D1
http://hkbws.org.hk/BBS/viewthre ... &extra=page%3D1
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Last edited by Beetle at 23/01/2013 21:37 ]