Conclusion
We identified the WNV antibody for the first time in resident wild birds and migratory wild birds of different areas of Bangladesh. However, no WNV genomic RNA was detected. It refers to the migration of birds as a possible source of transmission in our country. Future studies should be directed to continuous surveillance of the virus using a virus neutralization test (VNT) in humans and birds to prevent possible outbreaks and to identify the circulating strains in the country.