This presumed American Golden-Plover
was with a dozen other P. dominica at Tule Lake in Corpus Christi, Texas on April 01, 2006. This was one of two individuals that seemed to have extremely long tertials, and perhaps it is not a coincidence that these two birds were also different from the others in that they were quite advanced in their pre-Alternate molt, while the others were still in almost complete basic plumage.
Note the very long tertials (which may not be fully-grown - see below), and quite extensive pale markings in the fresher upperparts feathers. Also note that there seem to be scattered small black spots on the upper breast-side, in the area where any white patch would be in Alternate plumage; if it is reasonable to assume that these spots are on freshly-molted alternate feathers which thus will not be replaced again in the next couple of months, at least, then there seems very little room for a large white patch to develop - ?:
Note that the longest tertial is the 2nd-from-top(T2). On fully-grown, unworn tertials the longest is the 3rd-from-top(T3), and the color/pattern of the T3 here suggests that it is a fresh feather while the others are probably older-generation feathers. The point is that the T3 is probably still growing, and it should become longer than the current T2. Also note the slight bulge in the bill, near the tip:
