Nycticorax olsoni Bourne, Ashmole & Simmons, 2003:46

Ascension Island night heron



Taxonomy & Nomenclature



Conservation Status


Last record: subfossil



Ascension Island, South Atlantic


Biology & Ecology




Holotype: NHMRN S/1999.1.1 (complete right femur)

Type locality: "on the lava floor just beyond the main chamber of Chapel Grotto, Ascension, South Atlantic."



NHMRN S/1999.1.10

NHMRN S/1999.1.13

NHMRN S/1999.1.16

USNM 209519






Original scientific description:

Bourne W. P., Ashmole N. P. and Simmons K. L. (2003). A new subfossil Night Heron and a new genus for the extinct Rail from Ascension Island, central tropical Atlantic Ocean. ARDEA 91(1): 45-51.


Other references:

Fuller, Errol. (1999). The Great Auk. Southborough, Kent: Errol Fuller Publications.

Gaskell, Jeremy. (2001). Who Killed the Great Auk? Oxford: Oxford University Press.

Hume, Julian Pender and Walters, Michael. (2012). Extinct Birds. London: T & AD Poyser.

Olson, Storrs L. (1977). Additional notes on subfossil bird remains from Ascension Island. Ibis 119: 37-43.


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