While reviewing photographs of stints (and many other birds!) is fraught
with peril, it is my opinion that the Ocean Shores stint is
unambiguously not a Long-toed Stint. Not only does it lack the classic
head pattern required (dark crown wrapping into dark loral stripe, thus
breaking through supercilium, forming a "C" pattern at/above the lores),
or pale base to lower mandible, but one can compare the culmen length
directly to tarsus and middle toe in the fine photos. On Least
Sandpiper, the culmen is essentially equal to tarsus and to middle toe.
This is what I get by measurement on my computer screen: culmen = middle
toe = tarsus (although tarsus may be a tad longer than culmen). On
Long-toed Stint, the middle toe and tarsus are each >10% longer than
culmen, sometimes even 20% (biometrics published in various sources; I
happen to have Prater et al. 1977 in hand).

I think head pattern recalls Little Stint's split supercilium, but
suspect Least Sandpiper is the best choice.

Don Roberson
creagrus at montereybay.com