Marsh Sandpiper
Tringa stagnatilis
The marsh sandpiper resembles a small elegant greenshank, with a long fine bill and very long yellowish legs. Like the greenshank, it is greyish brown in breeding plumage, paler in winter, and has a white wedge up its back that is visible in flight. However, it is more closely related to the common redshank and the wood sandpiper. Together, they form a group of smallish shanks which tend to have red or reddish legs, and in breeding plumage are generally a subdued, light brown above with some darker mottling, with a pattern of somewhat diffuse small brownish spots on the breast and neck.
ID text from Wikipedia, CC BY-SA 4.0
Nordmann's Greenshank
Tringa guttifer
Nordmann's greenshank is a medium-sized sandpiper, at 29–32 cm (11–13 in) long, with a slightly upturned, bicoloured bill, and relatively short yellow legs. Breeding adults have darker plumage than their non-breeding counterparts. These adults often appear boldly marked, with dark brown spangling on their back, chest, and head and a white underbelly.They have a heavily streaked head and upper neck; broad, blackish, crescentic spots on lower neck and breast; and darker lores. Breeding adult bills are darker and less obviously bicolored as well.
ID text from Wikipedia, CC BY-SA 4.0
Where you might meet both
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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Marsh Sandpiper and Nordmann's Greenshank.