World Migratory Bird Day (WMBD) raises awareness about bird conservation, especially the threats (both human and nonhuman) birds face during seasonal migration. During the weeks leading up to WMBD, bird-focused organizations hold events to celebrate birds, participate in conservation initiatives, and raise awareness about birds in their communities. Each year, WMBD adopts a new theme. The WMBD theme for 2025 was "Shared Spaces" (see poster below). Details for WMBD 2026 are forthcomiong. Check back here for more detials!! To find out what is happening in Wisconsin during WMBD, explore the Wosconsin Society for Ornithology calandar. To see events nationwide and globally, or for more information about WMBD, visit the World Migratory Bird Day website.

WMBD is observed on the second Saturday in May in North America. Mexico, Central and South America, and the Caribbean observe WMBD on the second Saturday of October.