This King Rail (Rallus elegans)
was photographed at the cattail marsh below the levee on the
northwestern part of Balmorhea Lake (not the main levee on the east
side), Reeves county, Texas in late June or early July 1993. Note
especially the whitish belly extending up into the lower breast area
(thus a female?) and gray edgings admixed into the upperpart
fringes. These are scans of slides, and the lack of image depth in
the darker areas precludes making an accurate assessment of the dark
areas on the flanks.
Better photos and in-depth discussion of this bird can be found HERE.