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

Photo credit: Tree Swallow by Gerhard Assenmacher..

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

Observe birds at Sandstone Ranch with local birder Carl Starace.

Photo credit: Blue Grosbeak by Kevin Smith.

Learn about the value of Prairie Rattlesnakes and other reptiles and amphibians in our ecosystems, and meet a few live representatives!

NOTE: This program will be offered in-person only. Attendance will be limited and registration will be required.

Photo credit: Prairie Rattlesnake in defensive posture on road, by Cameron Young.

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

Look for colorful returning spring migrants in Boulder’s foothills with community naturalist Dave Sutherland.

Photo credit: Broad-tailed Hummingbird by Kevin Smith.

The WMBD 2025 theme is “Shared Spaces: Creating Bird-Friendly Cities and Communities” highlighting the need for a healthy coexistence between humans and birds.

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: Gray Catbird by Kevin Smith.

Explore how new scientific understandings of Earth as a living system intersect with cultural understandings, ancient and new, in this presentation by naturalist, Earth scientist and storyteller Martin Ogle.

Image by Martin Ogle.

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

Photo credit: Lark Sparrow by Kevin Smith.

Observe birds at Pella Crossing with local birder Carl Starace.

Photo of Osprey by Kevin Smith.

Hecla Lake, Louisville (map)

Observe waterfowl and other birds during spring migration on this easy guided walk with Kyle Kramer.

Photo credit: Mallard by Gerhard Assenmacher.

Attend the student-led 2025 Boulder Valley School District Climate Resilience Summit - see inspirational talks, table displays, an energy bike demonstration, and participate in guided discussions.

Image by Martin Ogle.

Join new BCAS field trip leader Daniel Carrier for a relaxed morning of birding at Walden Ponds Wildlife Habitat.

Photo credit: Tree Swallow by Gerhard Assenmacher.

Chris Pague will share conservation challenges and recent successes of the Southern High Plains Initiative, from the perspective of his decades of experience with ecology, natural history, conservation biology, and conservation planning, including 30+ years with The Nature Conservancy.

Photo Credit: Chris Page at Maverick Ranch in SE Colorado Canyonlands/Grasslands, by Kate Shorrock.

Teller Farm North Trailhead (map)

Observe a variety of returning migrants and resident birds along the White Rocks trail with local birder Carl Starace.

Photo credit: Northern House Wren by Kevin Smith.

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

Photo credit: Green-winged Teal pair, by Kevin Smith.

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

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

Hecla Lake, Louisville (map)

Observe waterfowl at the start of spring migration on this easy guided walk with Kyle Kramer.

Photo credit: Mallard by Gerhard Assenmacher.

Explore America’s nightjars with cultural sociologist Jared Del Rosso.

Eastern Whip-poor-will photo by Tom Murray, https://flic.kr/p/WqXsYi, CC BY-NC 2.0, Some Rights Reserved

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.