A serological survey was conducted to determine the prevalence of Newcastle disease (ND) and infectious bursal disease (IBD) antibodies in local ducks and local guinea fowls brought from different locations within Plateau State and neighboring areas to be sold at Yankaji, a poultry market in Jos. The hemagglutination inhibition test and agar gel immunodiffusion test were used to diagnose ND and IBD, respectively. Results indicated that out of the 165 serum samples collected from ducks, 11 (6.7%) had antibodies against the ND virus. Similarly, out of the 205 serum samples collected from guinea fowls, 28 (13.6%) had antibodies against the ND virus. All sera from ducks and guinea fowls were negative for IBD antibodies. It was concluded that both local ducks and guinea fowls had been exposed to the Newcastle disease virus but not to the infectious bursal disease virus.