Preliminary studies of Cross River gorilla (Gorilla gorilla diehli) and Nigeria-Cameroon Chimpanzee (Pan troglodytes ellioti) have been going on in Tofala area since 2004. These studies were mostly focused on determining the distribution of these two great apes species in the area. Reliable information on the ecology of wild Cross River gorilla and Nigeria Cameroon chimpanzee is still scarce. Such information can provide insights into great ape cognition and evolution and can provide valuable data to guide conservation efforts for remaining populations. The aim of this study was to make an assessment of the nesting and feeding ecology of Cross River gorilla and Nigeria Cameroon chimpanzee in Tofala Hill Wildlife Sanctuary.