Curlew Sandpiper in this plumage shouldn't show that pronounced of an eyebrow, and the bill would be all dark and noticeably down-curved. But I agree, the pattern of red on the underside is suggestive ....
Dave Irons
16-May-2011 05:54
What's the story with the lowest bird at the very left edge of this photo. Almost looks like it could be a Curlew Sandpiper, but the underwing is exactly like all the Red Phalaropes and it is not white on the lower flanks and undertail. Otherwise....