Yellow-browed type and Greenish type is obviously different in size. You can note the difference if you are familiar with them. The wing bar for both are also looks quite different. YOu may note this one (wing bar) is rather solid and with dark band in between compares to Greenish's wing bar is rather weak.
Under bill color is also very different.
Given the shifted color tone, you cannot justify the greenish color on its back but you still can see its yellow brow.
ID of such subtle species need checking a combination of features not just one .
Gary
[ Last edited by gary at 1/11/2010 00:03 ]