Stab in the dark? (1 Viewer)

Anyone want to try identify this one ...

Here are my thoughts:
1 - Some type of thrush (but the bill is wrong?)
2 - Blue Black Grassquit Female (but I think it is too big?)

Some markings that I have "noticed"
- small bright eyebrow
- same type of "line" on top of bill
- dark, heavy bill
- paler on the throat
- streaky breast
- dark tail contrasts with body
- very defined forked tail

Any assistance would be great

Photo taken in Boquete, Panama - elevation approx 4000 ft

Streaked Saltator (?)