Grey-tailed Tattler
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| Tringa brevipes (Vieillot, 1816) |
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Heteroscelus brevipes |
The Grey-tailed Tattler, Tringa brevipes (formerly Heteroscelus brevipes: Pereira & Baker, 2005; Banks et al., 2006), is a small shorebird. It 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.
Its breeding habitat is stony riverbeds in northeast Siberia. It nests on the ground, but these birds will perch in trees. They also sometimes use old nests of other birds.
Grey-tailed Tattlers are strongly migratory and winter on muddy and sandy coasts from southeast Asia to Australia. They are very rare vagrants to western North America and western Europe. These are not particularly gregarious birds and are seldom seen in large flocks except at roosts.
These birds resemble Common Redshanks in shape and size. The upper parts, underwings, face and neck are grey, and the belly is white. They have short yellowish legs and a bill with a pale base and dark tip. There is a weak supercilium.
They are very similar to their American counterpart, and differentiation depends on details like the length of the nasal groove and scaling on the tarsus. The best distinction is the call; Gray-tailed has a disyllabic whistle, and Wandering a rippling trill.
These birds forage on the ground or water, picking up food by sight. They eat insects, crustaceans and other invertebrates.
[edit] References
- Banks, Richard C.; Cicero, Carla; Dunn, Jon L.; Kratter, Andrew W.; Rasmussen, Pamela C.; Remsen, J. V. Jr.; Rising, James D. & Stotz, Douglas F. (2006): Forty-seventh Supplement to the American Ornithologists' Union Check-list of North American Birds. Auk 123(3): 926–936. DOI: 10.1642/0004-8038(2006)123[926:FSTTAO]2.0.CO;2 PDF fulltext
- BirdLife International (2004). Heteroscelus brevipes. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Database entry includes justification for why this species is of least concern
- Shorebirds by Hayman, Marchant and Prater ISBN 0-7099-2034-2
- Hayman, Peter; Marchant, John & Prater, Tony (1986): Shorebirds: an identification guide to the waders of the world. Houghton Mifflin, Boston. ISBN 0-395-60237-8
- Pereira, Sérgio Luiz & Baker, Alan J. (2005): Multiple Gene Evidence for Parallel Evolution and Retention of Ancestral Morphological States in the Shanks (Charadriiformes: Scolopacidae). Condor 107(3): 514–526. DOI: 10.1650/0010-5422(2005)107[0514:MGEFPE]2.0.CO;2 HTML abstract
