BirdLife International (2000) Threatened Birds of the World. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International.
COLSTON, P. R. & CURRY-LINDAHL, K. (1986) The Birds of Mount Nimba, Liberia. British Museum (Natural History), London.
DICKERMAN, R. W., CANE, W. P., CARTER, M. F., CHAPMAN, A. & SCHMITT, C. G. (1994) Report on three collections of birds from Liberia. Bull. Brit. Orn. Club 114 pp 267-274.
DOWSETT, R.J. & FORBES-WATSON, A.D. (1993) Checklist of Birds of the Afrotropical and Malagasy Regions. Vol. 1: Species limits and distribution. Tauraco Press. Liège, Belgium.
GATTER, W. (1987) Migration behaviour and wintering of Palaearctic birds in Liberia (West Africa). Bird migration in Liberia I. Verh. Orn. Ges. Bayern 24 pp 479-508.
GATTER, W. (1987) Bird migration in West Africa. Observations and hypotheses on migration strategies and migration routes. Bird migration in Liberia II. Die Vogelwarte 34 pp 80-91.
GATTER, W. (1988a) The coastal wetlands of Liberia: their importance for wintering waterbirds. Int. Counc. For Bird Preservation (ICBP), Study report No. 26. Cambridge.
GATTER, W. (1988b) Midwinter counts of Palaearctic waterbirds in Liberia (West Africa). Verh. Orn. Ges. Bayern 24 pp 659-687.
GATTER, W. and WOODCOCK, M. (Illustrator) (1997) Birds of Liberia. Hardcover - 320 pages. The Pica Press / Christopher Helm, London UK, ISBN: 1-8734-0363-1. Yale University Press, US. ISBN 0-3000-7576-6.
GATTER, W . (2000). Vogelzug und Vogelbestände in Mitteleuropa. Aula Verlag. ISBN 3-8910-4645-6. The 656 page book Bird migration and Bird Populations in Central Europe gives many references to bird migration of Palearctic migrants to West Africa and their population dynamics with links to their wintering ecology in Africa.
ROBERTSON, P. Liberia chapter pp 473-480 in FISHPOOL, L.D.C. and EVANS M.I. editors (2001) Important Bird Areas in Africa and Associated Islands: Priority sites for conservation. Newbury and Cambridge, UK. Pisces Publications and BirdLife International (BirdLife Conservation Series No.11).
The Malimbus website provides free of charge the full text of papers, notes, reports and reviews about the birds of this country that have appeared in the journal prior to the last three years. There are at least ten such articles for most West African countries, and as many as 90 for some. For more recent articles, you can find summaries and abstracts on the site.