D. Ogada

Dropping dead: causes and consequences of vulture population declines worldwide.
Ogada, D. L., Felicia Keesing, and M. Virani. 2012. “Dropping Dead: Causes And Consequences Of Vulture Population Declines Worldwide.”. In The Year In Ecology And Conservation Biology, 1249:57-71. Annals of the New York Academy of Sciences.
Impacts of large herbivorous mammals on bird diversity and abundance in an African savanna
Ogada, D. L., M.E. Gadd, Richard S. Ostfeld, T.P. Young, and Felicia Keesing. 2008. “Impacts Of Large Herbivorous Mammals On Bird Diversity And Abundance In An African Savanna”. Oecologia 156: 387-397. doi:10.1007/s00442-008-0994-1.