In this study, neurocranial bones of guinea fowl and turkey in Numidinae subfamilies of Phasinida family was investigated comparatively to reveal significant differences. Five guinea fowls and 5 turkeys were used regardless of their gender. The neurocranium consisted of the occipital, sphenoid, parietal, frontal and temporal bones. The fontanella was located smooth in the guinea fowl, while convex in the turkey. Weight of neurocranium bones only in turkey was heavier than that of guinea fowl and significant (P<0.01). It was observed that the parietal bone of the guinea fowl was located to be flat caudal, turkey was located to be flat dorsal. Frontal bones were narrow and in the middle of it caudo-dorsal horn protrusion located the helmet shape in participating in the formation of comb in the guinea fowl, while broad and there was no protrusion in the turkey. As a result, located in the same family of guinea fowl and turkey, it was determined that there were significant differences between the bones forming the neurocranium.