What specific Prinia species were these? - Khanh Hoa, Vietnam (2 Viewers)

[ike61095]

I recently captured some close-ups of these Prinias in a foothill forest. I'm not familiar with the Prinias in general so I'm not sure if all of these even belong to the same species. My quick research pointed to either Brown Prinia, Plain Prinia, or the Vietnam endemic species of Annam Prinia. I'm leaning towards the Plain Prinia but any feedback would be helpful. Thanks.

 

[Larry Sweetland]

Agree with Plain Prinia

 

[johnallcock]

I agree with Plain Prinia for the first four, but the last one has a heavier/deeper bill, streaking on the crown and poorly marked supercilium - I think this one might be Annam Prinia.

 

[ike61095]

Thank you all, I guess I will go with the Annam Prinia for the last one.

 

[Larry Sweetland]

Ah! Yes, I didn't get as far as looking at the last pic