Observance reference · Second Saturdays in May and October
World Migratory Bird Day
World Migratory Bird Day is a conservation campaign observed on the second Saturdays of May and October, reflecting migration across different hemispheres.
The campaign's 2026 peak dates are May 9 and October 10. Its partners invite bird observations and conservation activity across flyways; the linked Convention on Migratory Species source explains the campaign and its current theme.
Date and source
Date or period: Second Saturdays in May and October. Read the linked official source for the purpose of the observance and current information.
Convention on Migratory Species bird-day campaign