|Range of C. ruficollis
The red-necked stint (Calidris ruficollis) is a small migratory wader. The genus name is from Ancient Greek kalidris or skalidris, a term used by Aristotle for some grey-coloured waterside birds. The specific ruficollis is from Latin rufus, "red" and collum, "neck". 
These birds are among the smallest of waders, very similar to the little stint, Calidris minuta, with which they were once considered conspecific. The red-necked stint's small size, fine dark bill, dark legs and quicker movements distinguish this species from all waders except the other dark-legged stints. It measures 13–17 cm (5.1–6.7 in) in length, 28–37 cm (11–15 in) in wingspan and 21–51 g (0.74–1.80 oz) in body mass. It can be distinguished from the western sandpiper and the semipalmated sandpiper in all plumages by its combination of a fine bill tip, unwebbed toes, and longer primary projection.
The breeding adult has an unstreaked orange breast, bordered with dark markings below, and a white V on its back. In winter plumage identification is difficult, although it is shorter legged and longer winged than the little stint. Juveniles have more contrasting mantle plumage and weaker white lines down the back than their relative. The call is a hoarse "stit".
Distribution and habitat
Red-necked stints are strongly migratory, breeding along the Arctic littoral of eastern Eurasia and spending the non-breeding season in South East Asia and Australasia as far south as Tasmania and New Zealand. They are rare vagrants to western Europe. They are often seen in western Alaska and occasionally elsewhere in the Americas.
Their breeding habitat is tundra. They nest on the ground and breed from spring to summer.
They forage in wet grassland and soft mud, mainly picking up food by sight. In their non-breeding habitat they feed on intertidal mudflats and along the muddy margins of freshwater lakes. They mainly eat insects and other small invertebrates.
- BirdLife International (2015). "Calidris ruficollis". IUCN Red List of Threatened Species. Version 2015. International Union for Conservation of Nature. Retrieved 24 January 2016.
- Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. pp. 84, 341. ISBN 978-1-4081-2501-4.
- Dunning, John B., Jr., ed. (1992). CRC Handbook of Avian Body Masses. CRC Press. ISBN 978-0-8493-4258-5.
- Jonsson, Lars; Grant, Peter J. (1984). "Identification of stints and peeps". British Birds 77 (7): 293–315.
- Alström, Per; Olsson, Urban (1989). "The identification of juvenile Red-necked and Long-toed Stints". British Birds 82 (8): 360–372.
|Wikimedia Commons has media related to Calidris ruficollis.|
|Wikispecies has information related to: Calidris ruficollis|
- Selected red-necked stint images at Oriental Bird Images
- BirdLife species factsheet for Calidris ruficollis
- Calidris ruficollis on Avibase
- Red-necked stint videos, photos, and sounds at the Internet Bird Collection
- Red-necked stint photo gallery at VIREO (Drexel University)
- Interactive range map of Calidris ruficollis at IUCN Red List maps
- Audio recordings of Red-necked stint on Xeno-canto.
- Calidris ruficollis in the Flickr: Field Guide Birds of the World
- Red-necked stint media at ARKive