gary

Hi Allen,

The heavily streaked breasted is unusual for Dusky Warbler. You may go for Raddes Warbler or Yellow-streaked Warbler.
I have no experience on Yellow-streaked warbler and don't know if Raddes can be so streaked on its breast. However, the diffused front part of eyebrow and thick bill favour Raddes for me.

No matter which one, it's a clear photo to show the features of the bird. Remember to submit the photo to Photo Guide committe when it confirmed.

Gary