Blue-and-white bird

The difference between Pale Blue, Blue-and-White, Hainan Flycatchers in Vietnam:

1/ Pale Blue Flycatcher
Cyornis unicolor
The male have light blue upper parts and very light blue and white lower parts.
The female have gray-brown colors, lack of warm coloration.

2/ Blue-and-white Flycatcher
Cyanoptila cyanomelana

The male have black face, black throat, black breast, royal blue upperparts.
The female have brown upperparts.

3/ Hainan Blue Flycatcher
Cyornis hainanus
The male have sapphire-blue upperparts, and sapphire-blue face. Some are with sapphire-blue throat or white throat or orange throat. Some are with black wings.
The female have orange breast and brown with warm tint uppperparts