Common Greenshank
Tringa nebularia
Common greenshanks are brown in breeding plumage, and grey-brown in winter. When in water, they can appear very similar to marsh sandpipers but are distinguished by the shape of the lower bill which gives it an upturned appearance to the bill. They have long greenish legs and a long bill with a grey base. They show a white wedge on the back in flight. They are somewhat larger than the related common redshank. The usual call is a rapid series of three short fluty notes syllabilized as teu-teu-teu. Like most waders, they feed on small invertebrates, but will also take small fish and amphibians.
ID text from Wikipedia, CC BY-SA 4.0

Lesser Yellowlegs
Tringa flavipes
The lesser yellowlegs is a medium-large shorebird, 23–25 cm (9.1–9.8 in) in overall length and with a wingspan of 59–64 cm (23–25 in) and a weight of 67–94 g (2.4–3.3 oz). The sexes are similar both in plumage and in overall size. In breeding plumage, the upperparts are mottled with gray-brown, black and white. The underparts are white with irregular brown streaking on the breast and neck. In non-breeding plumage, the upperparts are more uniform gray-brown. The legs are yellow.
ID text from Wikipedia, CC BY-SA 4.0

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Play today's Daily BirdPhotos and recordings are credited to their authors under the licence shown. Full profiles: Common Greenshank and Lesser Yellowlegs.