Mobile bird identification
Bird Field Guide

In winter the Temminck's Stint has an even dark grey-brown back with a dull grey-brown breast, which is pale in the centre. It's legs are often bright yellow. It's underside is a clean white.

Temminck's Stint 

Calidris temminckii
Waders Menu
Notes:
A very secretive little bird easily overlooked, tends to be solitary and creeps around in an almost mouse like fashion. The Temminck's Stint is a very small wader, about the same size as a house sparrow.
Order: Charadriiformes

Family: Scolopacidae

Genus:  Calidris

Species: C. temminckii
This bird has a very prominent white throat band, note the back feathers colouration and the clean white underside. Also note the tail which protrudes beyond the wing tips, unlike the similar, Little Stint whose wing feathers protrude beyond the tail. This bird has brown legs, the Little Stint always has black legs.
The Temminck's Stint is a very small bird, about the size of a house sparrow which should be the first indicator of identification. This bird in winter plumage shows the uniform grey-brown upperparts with a clean white underside.
Adult Male & Female (Winter)
Thanks to:http://commons.wikimedia.org/wiki/User:J.M.Garg (Modified)
Thanks to:https://www.flickr.com/photos/micksway/ (Modified)
Adult Male & Female (Summer)
Breeding distribution
Probably breeding
Probably breeding
Confirmed to be breeding in this area
Confirmed breeding sites
Breeding distribution of the Temminck's Stint
General distribution:
A rare breeding bird in Northern Scandinavia, widespread as a migrant. Very rare breeding bird in the UK, more common as passage visitor with around 90 sightings per year, usually in late spring or autumn.
Habitat:
Breeds on tundra and grassy meadows. On passage is usually seen on mudflats or near muddy freshwater pools.
Temminck's Stint in winter plumage feeding.
Temminck's Stint identification
Temminck's Stint in summer plumage identification
Thanks to:https://www.flickr.com/photos/rob_zweers/ (Modified)
Temminck's Stint flying
*Breast pale in centre
White underside
*White outer tail feathers
Even grey-brown back, head & breast

*Greenish to yellow legs

Thin bill, very slightly curved
*White outer tail feathers in flight
Temminck's Stint in winter plumage
Thanks to:http://commons.wikimedia.org/wiki/User:J.M.Garg (Modified)
*Very small wader
Thin bill, very slightly curved
*Very small wader
*White outer tail feathers

*Greenish to yellow legs

White underside
Pale chin and throat
Dark back feathers fringed with pale rufous or grey
Temminck's Stint in summer plumage
In summer the Temminck's Stint has a distinctive pale chin/throat, with a rich brown, buff and grey mottled back. The extent of the white on the chin or throat of the bird can vary with some birds having a white band almost right around the neck and others only having a very small pale patch.
*Key ID points
* Key ID points
*Tail longer than wings
*Tail longer than wings