Grey-tailed Tattler
Tringa brevipes
The grey-tailed tattler is closely related to its North American counterpart, the wandering tattler (T. incana) and is difficult to distinguish from that species. Both tattlers are unique among the species of Tringa for having unpatterned, greyish wings and back, and a scaly breast pattern extending more or less onto the belly in breeding plumage, in which both also have a rather prominent supercilium. These birds resemble common redshanks in shape and size. The upper parts, underwings, face and neck are grey, and the belly is white.
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: Grey-tailed Tattler and Nordmann's Greenshank.