Mark K. Fogiel

Diet selection is related to breeding status in two frugivorous hornbill species of Central Africa

B. D. Hardesty, C. Clark, J. Poulsen, 2014, Journal of Tropical Ecology.

Seed dispersal by Ceratogymna hornbills in the Dja Reserve, Cameroon

B. D. Hardesty, V. T. Parker, T. Smith, 1998, Journal of Tropical Ecology.

Seed dispersal by Ceratogymna hornbills in the

B. D. Hardesty, V. T. Parker, K. Whitney, 1998 .

A preliminary survey of birds from the Lac Lobeke Reserve, south-eastern Cameroon

T. Smith, K. Whitney, K. Rasmussen, 1996, Bird Conservation International.