Attributes / relations provided by
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♦ 2de Magalhaes, J. P., and Costa, J. (2009)
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♦ 3Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014).
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♦ 4del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.).
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♦ 5Scaly-sided Merganser, BirdLife International (2001) Threatened birds of Asia: the BirdLife International Red Data Book. Cambridge, UK: BirdLife International.
♦ 6Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005).
Host-Parasite Database of the Natural History Museum, London