Join community naturalist Dave Sutherland and composer Jeffrey Lynch for a musical hike in Boulder’s foothills, to explore ancient stories from the rocks, accompanied by music inspired Colorado’s rocks and geology.

Image of Stegosaurus courtesy of Denver Museum of Nature and Science

Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.

Photo of Spotted Towhee by Kevin Smith.

Cottonwood Marsh Trailhead at Walden Ponds Wildlife Habitat (map)

NOTE: Per Boulder County Parks and Open Space’s website for this area, trails are expected to reopen by March 31.

Bird Walden Ponds Wildlife Habitat with birder Carl Starace, to look for early spring raptors, songbirds, shorebirds and more.

Photo credit: Lesser Yellowlegs, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.

NOTE: This trip is full but you can join the waitlist.
Join trip leader Jim Fischer to observe waterfowl, raptor , and songbirds at Carolyn Holmberg Preserve at Rock Creek Farm, including Stearns Lake, followed by brews and appetizers at 12 Degree Brewing..

Photo credit: Bald Eagle, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.

The Butterfly Pavilion’s Wings of the Tropics exhibit lets you walk in a rainforest surrounded by free-flying butterflies from around the globe - but it takes a lot of amazing work to make it possible! Go behind the scenes to learn how the butterflies are sourced, shipped from distant lands, and cared for before and after they hatch from their chrysalises.

RESCHEDULED FROM SATURDAY MARCH 16.

Bird the ponds and surrounding habitats of Pella Crossing with birder Carl Starace, to look for wintering and early spring waterfowl, raptors, and songbirds.

Western Meadowlark photo courtesy of Gerhard Assenmacher.

Bird the ponds and surrounding habitats of Pella Crossing with birder Carl Starace, to look for wintering and early spring waterfowl, raptors, and songbirds.

Western Meadowlark photo courtesy of Gerhard Assenmacher.

Chautauqua area - exact meeting location will be provided to registered participants.

Learn about your local Open Space lands on a hike to a flatiron with community naturalist Dave Sutherland.

Photo courtesy of Dave Sutherland.

Boulder Valley Ranch, Sage Trailhead (map)

Enjoy views of Jupiter and its moons with community naturalist Dave Sutherland and his large telescope.

NOTE: This program will be offered from 7-9 PM on ONE date - March 7, 8, or 9. Registered participants will be notified of the chosen date.

Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.

Photo of American Tree Sparrow by Kevin Smith.

Take a behind-the-scenes tour of the museum’s Vertebrate Zoology Collection. They will open climate-controlled cabinets and drawers in the collections space to show us bird and mammal skeletons, skulls, and skins.

Chautauqua area - exact meeting location will be provided to registered participants.

Learn about our local open space and enjoy views and wildlife on this hike with community naturalist Dave Sutherland.

Photo of Abert’s squirrel in ponderosa pine courtesy of Dave Sutherland.

Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.

Photo credit: Canada goose, BCAS Regional Birds photo gallery, multiple photographers credited at the bottom of this page.

NOTE: This trip is full but you can join the waitlist.
Join trip leader Ted Floyd to observe winter birds at Waneka Lake Park, followed by brews and appetizers at Liquid Mechanics Brewing Co.

Photo credit: BCAS Regional Birds photo gallery, multiple photographers credited at the bottom of this page.

Bird the ponds and surrounding habitats of Pella Crossing with birder Carl Starace, to look for wintering waterfowl, songbirds, and raptors.

Observe and photograph wild ducks and other water birds. International wildlife photographer John Weller will join us to offer pro tips on photography.

Teller Farm North Trailhead parking lot (map)

Look for a variety of wintering waterfowl, songbirds, and raptors with birder Carl Starace.

Participate in the Christmas Bird Count, at various locations in the city of Boulder and surrounding areas..
NOTE: Actual field times will vary by area/leader.

Photo courtesy of Camilla Cerea/Audubon.

Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.

Enjoy mountain views while observing raptors, waterfowl and more on a leisurely walk with birder Chris Petrizzo.

We'll count and map perching and flying eagles, harriers, and hawks. Information from this and future surveys will contribute to raptor habitat protection within the Boulder Creek floodplain.

Look for migrating waterfowl, wintering hawks, and more at Pella Crossing with birder Carl Starace.

Play the popular Wingspan board game while you enjoy appetizers provided by BCAS and drinks you purchase..

White-throated Swifts in flight, Boulder County Audubon Society donated image.

Explore how classical music composers have captured the essence of birds and nature in their works, with community naturalist Dave Sutherland.

Explore how classical music composers have captured the essence of birds and nature in their works, with community naturalist Dave Sutherland.

Sandstone Ranch Community Park and Nature Area
Sandstone Drive, Longmont (map)

Join birder Carl Starace to observe raptors, songbirds and more at Sandstone Ranch.

Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.

Bird the ponds and surrounding habitats of Pella Crossing with Carl Starace.

Look for migrating songbirds, waterfowl and raptors on this scenic trail with wildlife biologist and educator Megan Jones Patterson.

Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.