Ruddy shelduck (English Wikipedia)

Mayr, Ernst; Cottrell, G. William (1979). Check-list of Birds of the World. Vol. 1 (2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. p. 450.
Sherborn, C. Davies (1905). "The new species of birds in Vroeg's catalogue, 1764". Smithsonian Miscellaneous Collections. 47: 332–341 [339 No. 258]. Includes a transcript of the 1764 text.

birdlife.ch

Müller, Werner (2 April 2017). "Rechtzeitig handeln". Ornis: 12–14. Archived from the original on 22 September 2018. Retrieved 24 June 2017.

"Ruddy Shelduck: Tadorna ferruginea". BirdLife International. 2015. Retrieved 24 October 2015.

BirdLife International (2016). "Tadorna ferruginea". IUCN Red List of Threatened Species. 2016: e.T22680003A86011049. doi:10.2305/IUCN.UK.2016-3.RLTS.T22680003A86011049.en. Retrieved 12 November 2021.
Rookmaaker, L.C.; Pieters, F.F.J.M. (2000). "Birds in the sales catalogue of Adriaan Vroeg (1764) described by Pallas and Vosmaer". Contributions to Zoology. 69 (4): 271–277. doi:10.1163/18759866-06904005.
Carboneras, C.; Kirwan, G.M. (2021). Billerman, Shawn M; Bridwell, Myrah A (eds.). "Ruddy Shelduck (Tadorna ferruginea)". Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. doi:10.2173/bow.rudshe.02. S2CID 241566536. Retrieved 20 October 2015.
Garcia del Rey, Eduardo; Rodriguez-Lorenzo, Juan Antonio (2010). "Breeding status of the Ruddy Shelduck Tadorna ferruginea at Fuerteventura, Canary Islands: natural colonisation of two habitat types on an oceanic island". Ostrich. 81 (2): 93–96. Bibcode:2010Ostri..81...93G. doi:10.2989/00306525.2010.488376. S2CID 84867588.

Vishnevsky, Vasily (1 February 2009). ""Оранжевая революция" на московских прудах" [«Orange revolution» in Moscow's ponds]. Наука и Жизнь (in Russian): 141–144. Retrieved 26 June 2022.

Garcia del Rey, Eduardo; Rodriguez-Lorenzo, Juan Antonio (2010). "Breeding status of the Ruddy Shelduck Tadorna ferruginea at Fuerteventura, Canary Islands: natural colonisation of two habitat types on an oceanic island". Ostrich. 81 (2): 93–96. Bibcode:2010Ostri..81...93G. doi:10.2989/00306525.2010.488376. S2CID 84867588.

Carboneras, C.; Kirwan, G.M. (2021). Billerman, Shawn M; Bridwell, Myrah A (eds.). "Ruddy Shelduck (Tadorna ferruginea)". Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. doi:10.2173/bow.rudshe.02. S2CID 241566536. Retrieved 20 October 2015.

Bouglouan, Nicole. "Ruddy Shelduck: Tadorna ferruginea". oiseaux-birds.com. Retrieved 21 October 2015.

Carboneras, C.; Kirwan, G.M. (2021). Billerman, Shawn M; Bridwell, Myrah A (eds.). "Ruddy Shelduck (Tadorna ferruginea)". Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. doi:10.2173/bow.rudshe.02. S2CID 241566536. Retrieved 20 October 2015.
Garcia del Rey, Eduardo; Rodriguez-Lorenzo, Juan Antonio (2010). "Breeding status of the Ruddy Shelduck Tadorna ferruginea at Fuerteventura, Canary Islands: natural colonisation of two habitat types on an oceanic island". Ostrich. 81 (2): 93–96. Bibcode:2010Ostri..81...93G. doi:10.2989/00306525.2010.488376. S2CID 84867588.

"AEWA Species". Agreement on the Conservation of African-Eurasian Migratory Waterbirds. Retrieved 22 October 2015.

Müller, Werner (2 April 2017). "Rechtzeitig handeln". Ornis: 12–14. Archived from the original on 22 September 2018. Retrieved 24 June 2017.