Grey-headed kingfisher (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Grey-headed kingfisher" in English language version.

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387^th place

373^rd place

88^th place

160^th place

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6^th place

1,007^th place

1,255^th place

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3,128^th place

4,193^rd place

archive.org

Statius Müller, Philipp Ludwig (1789) [1776]. Vollständiges Natursystem Supplements- und Register-Band (in German). Vol. 9. Nürnberg: Gabriel Nicholaus Raspe. p. 94.
Peters, James Lee, ed. (1945). Check-list of Birds of the World. Vol. 5. Cambridge, Massachusetts: Harvard University Press. p. 197.
Swainson, William John (1821). Zoological illustrations. Vol. 1. London: Baldwin, Cradock, and Joy; and W. Wood. Plate 27 text.

Woodall, P.F. "Grey-headed Kingfisher (Halcyon leucocephala)". Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. Retrieved 24 November 2016.

Gill, Frank; Donsker, David, eds. (2017). "Rollers, ground rollers & kingfishers". World Bird List Version 7.2. International Ornithologists' Union. Retrieved 28 May 2017.