Rabbit Mountain Open Space parking lot (map)

Observe Fall birds at Ron Stewart Preserve at Rabbit Mountain Open Space with local bird watcher Carl Starace.

Photo: Townsend’s Solitaire, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery.

NOTE: This free program will be offered in-person and on Zoom.
IN PERSON: Doors open at 6:30 for social time with light refreshments.

Join BCAS for our first Masters of the Environment (MENV) Capstone Showcase on October 27. Hear from University of Colorado Boulder graduate students as they share the results of year-long projects with real-world partners.

Along Mesa trail - See map on details page for location.

See inside this historic cabin and learn about its history with cabin owner Regina Bock and community naturalist Dave Sutherland.

Photo of Roosa Cabin by Dave Sutherland.

Shanahan Ridge Trailhead - Lehigh Connector (Map)

Take a beautiful hike and sample prerecorded music that invokes our sense of place, with community naturalist Dave Sutherland.

Photo of sunset at Sawhill Ponds by Dave Sutherland.

Join for rare access to White Rocks Nature Preserve that hosts rare plants and a rare lizard that are found nowhere else in Boulder County, fossils, and creek scenery that will be at the height of fall color change.

Observe a variety of birds along the White Rocks trail with local birder Carl Starace. Meet at Teller Farm Parking Lot (map)

Photo credit: Wilson’s Snipe by Kevin Smith.

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

Photo credit: Barn Swallow by Gerhard Assenbacher.

Teller Farm North Trailhead (map)

NOTE: This trip is full, but you can join the waitlist.

Explore White Rocks Nature Preserve with wildlife biologist and educator Megan Jones Patterson, followed by brews at Avery Brewing.

Photo credit: Male and female Wood Ducks by Gerhard Assenmacher.

NOTE: This free program will be offered in-person only. No registration required, just come join us!
Doors open at 6:30 for social time with light refreshments.

Before the film, we will present a Lifetime Achievement Award to Ruth Carol and Glenn Cushman, to honor their decades of contributions to Boulder County through nature writing and more!

Then Ethan Cleveland will give a short talk about his recent experience at National Audubon Society’s Coastal Maine Bird Studies for Teens Program at Hog Island

Finally, our main program for the evening - Speaking Eep! follows Dr. Chris Ray and PhD candidate Rachel Billings as they work to decode the iconic “eeps” of pika language and discover how these beloved animals might adapt to an increasingly fragile environment. The film will be followed by a discussion and Q&A with the filmmakers and researchers.

Photo of American pika with food, from the film Speaking Eep! Directed by Jim and JinYoung Jayson, Just Float Films, 2026

Come learn a bit about Front Range weather, why we get bird rarities associated with some storm sytems, and how to maximize your chances of seeing cool birds.

Observe birds at Sandstone Ranch Community Park and Nature Area in Longmont with local birder Carl Starace.

Photo: Wilson’s Warbler by Becky Matsubara

Rabbit Mountain Open Space parking lot (map)

Observe late summer birds at Ron Stewart Preserve at Rabbit Mountain Open Space with local bird watcher Carl Starace.

Photo: Northern Shrike by Matthew Studebaker

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

Photo credit: Bullock’s Oriole by Kevin Smith.

Join Colorado Field Ornithologists for the 2026 Colorado Birding Challenge. There are lots of ways to participate and see how many species you can find in 24 hours!

Preview the speakers for the fall 2026 programs season.

NOTE: Our programs for the foreseeable future will be held at our usual location, the Unitarian Universalist Church of Boulder on Pennsylvania Avenue. The church’s construction has been delayed.

Starting in 2020, many programs were recorded and are available to view on the BCAS YouTube channel. The channel includes playlists for each fall/spring program series.

THIS EVENT HAS BEEN CANCELED. Join the Boulder County Audubon Teen Naturalists to kick off the 2026-27 season with a pizza party and an opportunity to meet Colorado’s moths up close and personal.

Golden Ponds Nature Area parking lot
2505 3rd Avenue, Longmont, CO (map)

Observe spring birds at Golden Ponds Nature Area in Longmont with local bird watcher Carl Starace.

Photo credit: Juvenile Cooper’s Hawk by Alan Vernon CC 2.0 via Wikimedia.

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

Photo credit: Spotted Sandpiper by Gerhard Assenmacher.

Observe summer birds along Old St. Vrain Road with local birder Carl Starace.

Photo credit: Western Flycatcher by Kevin Smith.

Join BCAS to celebrate TEN years of Boulder Birds and Brew, with bird games, snacks and brews at Wild Provisions

Photo credit: Mountain Bluebird, by Kevin Smith.

Sandstone Ranch Community Park and Nature Area, Sandstone Drive, Longmont.

Observe birds at Sandstone Ranch with local birder Carl Starace.

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

Photo credit: Black-capped Chickadee by Kevin Smith.

Sawhill Ponds Trailhead (map)

Enjoy the rising full moon and accompanying classical music, plus twinkling stars and hopefully fireflies, with community naturalist Dave Sutherland.

Photo of full moon by Dave Sutherland.

Observe resident and migrant birds at Rabbit Mountain with local bird watcher Carl Starace.

Photo credit: Yellow-Breasted Chat by Ken Cook.

Realization Point parking lot, Flagstaff Road (map)

Visit one of the last remnants of the Ice Age forest in Colorado with community naturalist Dave Sutherland.

Photo by Dave Sutherland.

Observe birds in the foothills at Heil Valley Ranch with local birder Carl Starace.

Photo credit: Western Tanager by Kevin Smith.

Peer into the heart of our galaxy, the Milky Way, to see new stars like the Sun being born and much more with community naturalist Dave Sutherland.

NOTE: The program will be offered once on June 11, 12, or 13, on the night with the best weather forecast.

Image of Whirlpool Galaxy by Dave Sutherland..

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

Photo credit: Northern Flicker by Kevin Smith.

Each spring, tropical migrants return to Boulder to nest. Join bird song expert Nathan Pieplow and naturalist Dave Sutherland at one of our best birding "hot spots" for an exploration of bird songs and calls.

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: Black-headed Grosbeak by Kevin Smith.