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del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Dowsett, R.J. and Forbes-Watson, A.D. 1993. Checklist of birds of the Afrotropical and Malagasy regions. Tauraco Press, Liège, Belgium.

Fishpool, L. and Tobias, J. 2016. Sassi’s Olive Greenbul (Phyllastrephus lorenzi). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (ed.), Handbook of the Birds of the World Alive. (retrieved from http://www.hbw.com/node/57997 on 28 September 2016)., Lynx Edicions, Barcelona.

Fishpool, L.D.C. and Tobias, J.A. 2005. Family Pycnonotidae (Bulbuls). In: J. del Hoyo, A. Elliott and C. Christie (eds), Handbook of Birds of the World, pp. 124-250. Lynx Edicions, Barcelona, Spain.

Howard, P. C. 1991. Nature conservation in Uganda's tropical forest reserves. International Union for the Conservation of Nature and Natural Resources, Gland, Switzerland.

Keith, S.; Urban, E. K.; Fry, C. H. 1992. The birds of Africa vol. IV. Academic Press, London.

Plumptre, A. J.; Mutungire, N. 1996. The effects of disturbance from shifting cultivation on the understorey bird community in the Ituri Forest, Zaire.

Sibley, C.G. and Monroe, B.L. 1990. Distribution and Taxonomy of Birds of the World. Yale University Press, New Haven, USA.

Sibley, C.G. and Monroe, B.L. 1993. A supplement to 'Distribution and Taxonomy of Birds of the World'. Yale University Press, New Haven, USA.

Stattersfield, A.J., Crosby, M.J., Long, A.J. and Wege, D.C. 1998. Endemic bird areas of the world: priorities for bird conservation. BirdLife International, Cambridge, U.K.

Search for photos and videos, and hear sounds of this species from the Macaulay Library

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Recommended citation
BirdLife International (2023) Species factsheet: Phyllastrephus lorenzi. Downloaded from http://datazone.birdlife.org/species/factsheet/sassis-olive-greenbul-phyllastrephus-lorenzi on 09/06/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 09/06/2023.