This is a nearly full frame image of a Sanderling. The sun was mostly shining that morning, but we had intermittent cloud cover. That's when I took this image. I like the complimentary colors that overcast skies produce when photographing this species of bird.
Canon 1D Mark III, 840mm, f/7.1, 1/1600, ISO 640, +1/3 EC, no flash, low tripod
Yes, overcast conditions really help with the whites of certain shorebirds. Nice one of this adult non-breeding plumage bird. I like all the grays here too.