Conclusion
Avian influenza virus antibody (6.62 %) and antigen (3.85 %) were detected in some wild birds in Zaria and its environs. To the best of our knowledge, this study confirms the first report of AIV antibody detection in mallards in Zaria, Nigeria. Also, this is the first report on the detection of AIV antigen in Senegalese parrot in Nigeria. These birds therefore could play significant roles in the natural spread of AI. Therefore, interaction between these species of wild birds and domestic poultry should be limited to minimize spread of AI. Also, further studies on the isolation and characterization of avian influenza virus from wild birds should be carried out.