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, vol. 107, nr. 3, s. 514–526. doi:10.1650/0010-5422(2005)107[0514:MGEFPE]2.0.CO;2Fulltext
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, vol. 123, nr. 3, s. 926–936. doi:10.1642/0004-8038(2006)123[926:FSTTAO]2.0.CO;2PDF fulltext
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, vol. 107, nr. 3, s. 514–526. doi:10.1650/0010-5422(2005)107[0514:MGEFPE]2.0.CO;2Fulltext
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, vol. 123, nr. 3, s. 926–936. doi:10.1642/0004-8038(2006)123[926:FSTTAO]2.0.CO;2PDF fulltext
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wpe.wetlands.org
Wetlands International. 2015. Waterbird Population Estimates. Hämtad från wpe.wetlands.org 20150917.