Upcoming Events
Walden Ponds with Carl Starace
Cottonwood Marsh Trailhead at Walden Ponds Wildlife Habitat (map)
NOTE: This trip was rescheduled from Saturday April 6 due to weather and trail conditions.
Per Boulder County Parks and Open Space’s website for this area, most Walden Ponds trails have reopened.
Bird Walden Ponds Wildlife Habitat with local birder Carl Starace, to look for returning songbirds, shorebirds and more.
Photo credit: Lesser Yellowlegs, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.
Lafayette Birds! First Sunday Bird Watching
Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.
Photo credit: White-faced Ibis, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.
Birding Old St. Vrain Road with Carl Starace
Picture Rock Trailhead, Heil Valley Ranch, Red Gulch Road, Lyons, CO (map)
Observe early summer birds along Old St. Vrain Road with local birder Carl Starace.
Photo credit: Violet-green Swallow, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.
“Mindful Birding” at Goshawk Ridge
Observe birds mindfully and deeply along the Goshawk Ridge trail with birder Peter Ruprecht.
Photo of Western Tanager by Kevin Smith.
Lafayette Birds! First Sunday Bird Watching
Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.
Photo of Yellow Warbler by Kevin Smith.
After-work Birding at Rocky Flats
Meeting location: public access parking lot for Rocky Flats National Wildlife Refuge, on the south side of Hwy 128 about a mile west of Indiana Street (map)
Look for grassland and shrubland birds on an evening hike with birder Peter Ruprecht.
Photo credit: Eastern Kingbird, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.
41st Annual North American Butterfly Association Count
Help with this annual census of the varied and abundant butterfly species at the spectacular Cal-Wood Education Center.
Garita skipperling photo by Pam Piombino.
Galaxy Quest - Telescope Exploration
Boulder Valley Ranch, Sage Trailhead (map)
Explore vast galaxies in the night sky with community naturalist Dave Sutherland.
NOTE: This program will be offered from 8:30-10:30 PM on ONE date - April 28, 29, or 30. Registered participants will be notified of the chosen date.
Photo: Actual view of the Needle Galaxy NGC 4565 through Dave's telescope, by Dave Sutherland.
Symphony in Stone -CANCELED DUE TO WEATHER, will be rescheduled
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
Lafayette Birds! First Sunday Bird Watching
Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.
Photo of Spotted Towhee by Kevin Smith.
CANCELED & RESCHEDULED TO MAY 5 -Walden Ponds with Carl Starace
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.
Boulder Birds and Brew: Stearns Lake and 12 Degree Brewing
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.
Teen Naturalists: Behind the Scenes at the Butterfly Pavilion
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.
Pella Crossing with Carl Starace
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.
CANCELED AND RESCHEDULED - Pella Crossing with Carl Starace
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.
CANCELED - Newcomers Hike to a Flatiron!
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.
CANCELED - Telescope Tag with Jupiter’s Moons
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.
Lafayette Birds! First Sunday Bird Watching
Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.
Photo of American Tree Sparrow by Kevin Smith.
Teen Naturalists: Behind the Scenes at Denver Museum of Nature and Science
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.
Open Space Believe it or Not!
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.
Lafayette Birds! First Sunday Bird Watching
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.
Boulder Birds and Brew: Waneka Lake Park and Liquid Mechanics Brewing Co. in Lafayette
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.
Pella Crossing with Carl Starace
Bird the ponds and surrounding habitats of Pella Crossing with birder Carl Starace, to look for wintering waterfowl, songbirds, and raptors.
Teen Naturalists: Winter Duck Extravaganza
Observe and photograph wild ducks and other water birds. International wildlife photographer John Weller will join us to offer pro tips on photography.
White Rocks Trail at Teller Farms with Carl Starace
Teller Farm North Trailhead parking lot (map)
Look for a variety of wintering waterfowl, songbirds, and raptors with birder Carl Starace.
Boulder Christmas Bird Count
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.
Lafayette Birds! First Sunday Bird Watching
Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.
Rock Creek Farm Raptors - CANCELED DUE TO SNOW
Enjoy mountain views while observing raptors, waterfowl and more on a leisurely walk with birder Chris Petrizzo.
Teen Naturalists: Wintering Raptor Survey Along White Rocks Trail
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.
Migrating Waterfowl and Winter Hawks at Pella Crossing with Carl Starace
Look for migrating waterfowl, wintering hawks, and more at Pella Crossing with birder Carl Starace.
WINGSPAN board game + Liquid Mechanics Brewing Co.
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.
Wings and Songs: Nature and Music
Explore how classical music composers have captured the essence of birds and nature in their works, with community naturalist Dave Sutherland.
Wings and Songs: Nature and Music
Explore how classical music composers have captured the essence of birds and nature in their works, with community naturalist Dave Sutherland.
Sandstone Ranch with Carl Starace
Sandstone Ranch Community Park and Nature Area
Sandstone Drive, Longmont (map)
Join birder Carl Starace to observe raptors, songbirds and more at Sandstone Ranch.
Lafayette Birds! First Sunday Bird Watching
Discover the fun of observing birds and other natural wonders with knowledgeable Lafayette bird watchers.
Pella Crossing with Carl Starace
Bird the ponds and surrounding habitats of Pella Crossing with Carl Starace.
Boulder Birds & Brew: White Rocks Trail and Avery Brewing Co.
Look for migrating songbirds, waterfowl and raptors on this scenic trail with wildlife biologist and educator Megan Jones Patterson.