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

Photo of prairie dog skull by Ann Duncan..

Enjoy a variety of fun and exciting exhibits and activities celebrating migratory birds! Join BCAS and the City of Lafayette at Waneka Lake and Greenlee Wildlife Preserve for the 11th annual celebration of fall bird migration.

Photo from the 2023 event courtesy of Martin Ogle.

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.

Walden Ponds Wildlife Habitat (map)

Bring the entire family to celebrate bird migration! Learn about insects and their importance to bird life, take a bird walk, and meet live birds of prey.

Advocating for bird-friendly legislation is one of the most impactful ways to help birds and the environment, but without an understanding of the process, it can seem daunting. Getting Green Laws is a free webinar training on how Coloradans can make their voices heard by state legislators on timely environmental laws being considered right now.

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.

Explore new scientific understandings of Earth as a living system with naturalist Martin Ogle, accompanied by musicians from the Boulder Philharmonic.

Photo courtesy of Martin Ogle.

Join BCAS for our annual holiday party for refreshments and socializing before our special program: a showing of the film Mighty Oak.

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.

It Starts at the Top: The Intertwined Fates of Water and Ecosystems in the Climate Crisis

Enjoy a variety of fun and exciting exhibits and activities celebrating migratory birds! Join BCAS and the City of Lafayette at Waneka Lake and Greenlee Wildlife Preserve for the 10th annual celebration of fall bird migration.

Photo of migratory bird mural painting courtesy of Martin Ogle.

Join BCAS to celebrate seven years of Boulder Birds and Brew!

Click on event title or photo for details.

Walden Ponds Wildlife Habitat (map)

Bring the entire family to celebrate bird migration! Learn about water and its importance to bird life, take a bird walk, and meet live birds of prey.

Click on event title or photo for details.

Enjoy a short talk and hands-on activities designed to enhance your appreciation of birds!

Click on event title or photo for details.

Join naturalist Martin Ogle to learn about the latest scientific understandings of Earth and how they are reflected all around us.

Photos courtesy of Martin Ogle.
Click on event title or photo for details.

Participate in the Christmas Bird Count, at various locations around Boulder County.
NOTE: Actual field times will vary by sector/leader.

Photo courtesy of Camilla Cerea/Audubon.

Click on event title or photo for details.

Join BCAS to celebrate our 50th anniversary, and to sign up for our very special 2023 Interludes With Nature trips!

Click on event title or photo for details.

2022 World Migratory Bird Day is themed “Dim the Lights for Birds at Night.”

Click on event title or photo for details.

Join BCAS and the City of Lafayette at Waneka Lake and Greenlee Wildlife Preserve for a celebration of fall bird migration.

Participate in the 80th annual Christmas Bird Count, at various locations around Boulder County.
NOTE: Actual field times will vary by sector/leader.

Photo courtesy of Camilla Cerea/Audubon.

Click on event title or photo for details.

Join Audubon Rockies for a ribbon-cutting ceremony for the new Habitat Hero garden at Jack's Solar Garden!

The Colorado Field Ornithologists invite interested birders and nature enthusiasts to participate in the first annual Colorado Birding Challenge on May 8, 2021.