Southern yellow-billed hornbill (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Southern yellow-billed hornbill" in English language version.

refsWebsite

Global rank English rank

1iucnredlist.org

88^th place

160^th place

2^nd place

2^nd place

low place

low place

adu.org.za

sabap2.adu.org.za

Herremans, M. South African Bird Atlas Project 2 – Southern Yellow-Billed Hornbill (PDF).

doi.org

BirdLife International (2016). "Tockus leucomelas". IUCN Red List of Threatened Species. 2016: e.T22682384A92942849. doi:10.2305/IUCN.UK.2016-3.RLTS.T22682384A92942849.en. Retrieved 12 November 2021.

iucnredlist.org

BirdLife International (2016). "Tockus leucomelas". IUCN Red List of Threatened Species. 2016: e.T22682384A92942849. doi:10.2305/IUCN.UK.2016-3.RLTS.T22682384A92942849.en. Retrieved 12 November 2021.