No crown stripe, so it is a Yellow-browed Warbler. Author: badesc Time: 8/03/2013 22:57
The bird does show a crown stripe, in my view. It is certainly visible in the second photograph.
Besides, it shows a broad supercillium, especially in front of the eye, that looks yellowish as well, bordered by a blackish eye stripe.
All that points more to Pallas's Leaf Warbler than to Yellow-browed Warbler to me. Author: kkchang168 Time: 9/03/2013 00:23
Thank you very much. I can tell that it has a crown stripe so I suspect that it is a Pallas's Leaf Warbler. But in "The BIRDS of HONG KONG and SOUTH CHINA", it said Yellow-Browed Warbler occasionally has a faint crown stripe, so I am not sure how to identify it. I have other photos show that it has yellow rump and it is very active too. So I think it is a Pallas's Leaf Warbler. Author: badesc Time: 9/03/2013 14:44
It"s true that Yellow-browed Warbler can sometimes show a faint crown stripe, but I think it tends to be more diffuse than in Pallas's, less prominent.
The supercillium of your bird is very broad and yellow, reaching the forehead. I would expect it to be less prominent in Yellow-browed in comparison.