From OBC images, Pale Blue males show a reflective "tiara" like most other medium-sized "Blue Flycatchers", and has a longer, more hooked bill than Verditers. Both tend to show chevrons on the under-tail, although these are fainter in some (subspecies? of) Pale Blues.
This bird shows a stout bill, with no contrasting cyan sheen on the forehead - both consistent with typical female Verditer.
[ Last edited by kkoel at 23/11/2011 23:15 ]