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World Migratory Bird Day of the Rockies

Walden Ponds Wildlife Habitat 3893 N. 75th St., Boulder

World Migratory Bird Day is officially celebrated on the second Saturday of May in Canada and the U.S., and the second Saturday of October in Mexico, Central and South America, and the Caribbean. This year, World Migratory Bird Day highlights birds from around the world to celebrate the 2026 theme: “Every Bird Counts – Your Observations Matter!” Learn how these species contribute to our understanding of migratory patterns and connect with communities across the globe. Join us on Saturday, May 16, at Walden Ponds Wildlife Habitat for a fun-filled day celebrating the incredible journeys of migratory birds and learning how we can all make a difference for bird conservation. Event Highlights: Special ceremony recognizing Boulder as an official Bird City by the Bird City Network. Live bird-of-prey showcase. Guided bird walks (available in English and Spanish). Bird identification games & hands-on activities for all ages. Educational stations hosted by amazing organizations like the Butterfly Pavilion, Greenwood Wildlife Rehabilitation Center, Boulder Audubon Society, Harlequin’s Gardens, and the Xerces Society for Invertebrate Conservation. Registration required. Register .tribe-events-c-subscribe-dropdown{display:none;}

Assay Office Museum Open House

Assay Office Museum 6352 Fourmile Canyon Dr, Boulder

Join us for a special open house at the Assay Office Museum, a surviving structure from the heyday of hard rock mining in the Colorado mountains. Discover how miners once tested ore for valuable metals using assaying. Explore original tools and historical artifacts and hear stories from the mining boom era. Learn about the families who lived and worked in this rugged landscape and helped shape the region's rich mining heritage. This is a must-visit for anyone passionate about mining history, geology, or Colorado history. No registration needed.

The Birds and the Bees and Beyond: The Inside Story of Pollination

Longmont Public Library 409 4th Ave, Longmont

Pollinators play essential roles in our food supply and the health of ecosystems. While many of us think of honeybees as the primary pollinators, much of the work is done by other surprising sources, including beetles, butterflies, moths, wind, and water. Discover the many pollination strategies of plants during this family-friendly slideshow and outdoor walk. We’ll explore how plants and animals work together to create a bountiful world, and what we can do to help them thrive. Registration will open approximately 20 days before the event. <!-- Registration required. Register --> .tribe-events-c-subscribe-dropdown{display:none;}