wgeoff

I think this is a Bianchi's Warbler, complete eyering, faint wingbar and lower border of the crown stripes going part way down to the bill.
White-spectacled should show a broken eyering and stronger wingbar.

The ID document for Golden-spectacled Warblers refered to elsewhere by Paul Leader appears here

http://www.geoffwelch46.com/GSPECID.doc

Note this is Paul Leader's document but he has given permission for publication.