Preview the speakers for the spring 2025 programs season.

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.

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

Photo credit: American Tree Sparrow by Kevin Smith..

Join pollinator researchers Carol Kearns and Diana Oliveras to learn about their field work, how human activities negatively affect bumblebees and native insects, and strategies to help native bees

Photo of Bombus huntii by Diana Oliveras.

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

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

Data collected at banding stations have greatly increased our understanding of migratory routes and timings, species’ range limits, average lifespans, and how all these life-history characteristics may be changing over time.

Photo of Meredith showing students a banded bird.

Walden Ponds Wildlife Habitat (map)

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

Explore Walden Ponds Wildlife Habitat with birder Jim Fischer, followed by beers at Wild Provisions Beer Project.

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

Thanks to the generous releases of warm suds from the Coors Brewing factory, Clear Creek below Golden does not freeze over in winter. Hooded Mergansers, goldeneyes, shovelers, and other wild ducks gather close to the public trail, allowing for unusually close viewing.

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

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

NOTE: THIS PROGRAM HAS BEEN CANCELLED DUE TO AN UNFAVORABLE WEATHER FORECAST FOR ALL THREE NIGHTS.

Enjoy stunning viewing of planets, galaxies, star clusters, and nebulae with community naturalist Dave Sutherland..

NOTE: This program will be offered JUST ONCE on Dec 27, 28, or 29 - the night with the best weather forecast.

Image of Jupiter from NASA’s Hubble Space Telescope.

Sawhill Ponds Trailhead (Map)

Explore the mysterious world of the Great Horned Owl under the full Owl moon, with community naturalist Dave Sutherland.

Photo by Dave Sutherland.

We will spend a half-day walking through the forest, contributing our discoveries to North America's oldest published 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.

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

Play WIngspan and The Great North American Bird Watching Trivia game while enjoying brews and appetizers.

Wingspan game photo from Stonemeier Games.

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

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

View Jupiter's moons and Saturn's rings and sample Boulder Philharmonic's music, with community naturalist Dave Sutherland..

Image of Jupiter from NASA’s Hubble Space Telescope.

Kevin's comedy will have us laughing at animal antics and re-thinking the wildlife around us. Ticketed Event! See full description for details.

Photo by Ingo Hamann. Laughing Out Loud. Comedy Wildlife Awards Finalist.

Bird along Crane Hollow Road with local birder Carl Starace to look for wintering waterfowl and passerines.

Photo of American Tree Sparrow by Kevin Smith..

Survey for raptors at Lagerman Reservoir.

Bird the ponds and surrounding habitats of Pella Crossing with Carl Starace to look for waterfowl and passerines.

Photo credit: male Mallard in flight; multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.

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

Photo credit: Black-billed Magpie, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.

View Jupiter's moons and Saturn's rings and sample Boulder Philharmonic's music, with community naturalist Dave Sutherland and composer John Heins.

Image of Jupiter by Dave Sutherland.

Experience mammal skulls up close with community naturalist Dave Sutherland and mammalogist Carron Meaney.

Photo of prairie dog skull by Ann Duncan..

View Jupiter's moons and Saturn's rings and sample Boulder Philharmonic's music, with community naturalist Dave Sutherland and composer John Heins.

Image of Saturn by Dave Sutherland.

Learn about plans for wildlife crossings along Highway 36 between Boulder and Lyons, from project leader and Boulder County Parks and Open Space wildlife biologist Susan Spaulding. Prior to Susan's talk, Alexander Howard will talk for ten minutes about his experience at the Hog Island birding camp, sponsored by a scholarship from BCAS.

Photo of elk crossing Highway 36 north of Boulder, courtesy of Susan Spaulding.

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

Observe birds at Sandstone Ranch with local birder Carl Starace.

Photo credit: Bushtit, 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.

Explore Golden Ponds Nature Area with birder and wildlife biologist Megan Jones Patterson.

Photo credit: White-breasted Nuthatch, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.

Bird the White Rocks Nature Preserve with Carl Starace to look for waterfowl and passerines.

Photo credit: Green-winged Teal pair, multiple photographers credited at the bottom of the BCAS Regional Birds photo gallery webpage.

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

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