Variable hawk (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Variable hawk" in English language version.

refsWebsite

Global rank English rank

2^nd place

3,324^th place

2,257^th place

88^th place

160^th place

26^th place

20^th place

332^nd place

246^th place

cornell.edu (Global: 332^nd place; English: 246^th place)

BirdLife International (2016). "Geranoaetus polyosoma". IUCN Red List of Threatened Species. 2016 e.T22735520A95113871. doi:10.2305/IUCN.UK.2016-3.RLTS.T22735520A95113871.en. Retrieved 19 November 2021.
Farquhar, C. C. (1998). "Buteo polyosoma and B. Poecilochrous, the "Red-Backed Buzzards" of South America, Are Conspecific". The Condor. 100 (1): 27–43. doi:10.2307/1369894. JSTOR 1369894.
Jaksic, Fabian M.; Iriarte, J. Agustín; Jiménez, Jaime E. (June 2002). "Las rapaces del Parque Nacional Torres del Paine, Chile: biodiversidad y conservación" [The raptors of Torres del Paine National Park, Chile: biodiversity and conservation]. Revista chilena de historia natural (in Spanish). 75 (2): 449–461. doi:10.4067/S0716-078X2002000200014.

South American Classification Committee (2007). Merge Buteo poecilochrous into B. polyosoma.. Accessed 10-07-2009
South American Classification Committee (2009). Re-split Buteo poecilochrous from B. polyosoma.. Accessed 10-07-2009