Naturalist Nights: Three Billion Birds Lost

Naturalist Nights: Three Billion Birds Lost: The State of Our Birds and How We Get Them Back

Arvind Panjabi, Avian Conservation Scientist, Bird Conservancy of the Rockies


In-person Event Dates:

Wednesday, Mar. 9 | Third Street Center in Carbondale
Register here for Weds in person via Wilderness Workshop.

Thursday, March 10, 6pm | Hallam Lake in Aspen at Hallam Lake
Register here for Thurs in person via ACES


LIVE STREAMING ON YOUTUBE on Thursday, March 10, 6pm. (No registration required).


What can we do to bring back our birds and save the planet? In this presentation, Panjabi will provide a synopsis of the state of our bird populations, both locally and continentally, and talk about the loss of 3 billion birds over the last half-century. He will also cover the massive die-off of migrants in Colorado in 2020 and the impact it has on populations. In addition, Panjabi will highlight initiatives underway at the Bird Conservancy of the Rockies and other organizations to address various conservation challenges at local, national and international scales. 

About Arvind Panjabi

Arvind Panjabi is a Senior Research Scientist at Bird Conservancy of the Rockies where he works to conserve the birds of western North America through science, education and stewardship. He has spent much of his 21-year career at Bird Conservancy developing partnerships, local capacity and the science to advance bird conservation in Latin America, especially in the grasslands of northern Mexico. He has published over 20 peer-reviewed articles on the ecology and conservation of North American birds, including the landmark paper on the Decline of the North American Avifauna in Science in 2019. Arvind also works closely with Partners in Flight to identify and coordinate bird conservation priorities among wildlife agencies and organizations across North America. When not in the field, office or traveling, Arvind enjoys watching birds, playing music, and camping with his wife Susan and two teenage boys.

Note: This lecture will also be given on Wednesday, Mar. 9, at 6pm at the Third Street Center in Carbondale. To register for that session, click here.

About Naturalist Nights

Each winter, ACES partners with Wilderness Workshop and Roaring Fork Audubon to co-host the popular Naturalist Nights speaker series, bringing a great line-up of experts to explore topics of the natural world with our community. To learn more about this series and view previous lectures, click here. Presentations are on Wednesdays at 6pm at the Third Street Center in Carbondale, CO, and Thursdays at 6pm at ACES at Hallam Lake, in Aspen, CO. 

COVID-19 Protocols

To help keep our community healthy, attendees ages 13 and older will be required at check-in to show proof that they have received the complete Covid-19 vaccine or a negative Covid-19 test on a specimen taken no longer than 72 hours prior to the event. Photo ID will also be required for verification. No information will be stored or copied to ensure privacy is protected. 

For proof of vaccination you can use:

  • CDC Vaccination Card. A digital photo or photocopy of this card is also acceptable.
  • Vaccination Record or other official immunization record, including from your healthcare provider. A digital photo or photocopy of this card is also acceptable.

For proof of a negative test you can use:

  • Written proof of a negative Covid-19 test from a licensed healthcare provider that includes the date and time of the test as well as the result. A digital photo or photocopy is also acceptable.

Individuals who do not have proof of vaccination or a negative test result will not be permitted entrance. Masks are required regardless of vaccination status. All individuals age two and older are required to wear a mask indoors when within six feet of another person at all times except when temporarily eating and drinking. Mask wearing will be strictly enforced.

With questions or comments about this program, please contact Phebe Meyers, ACES Community Programs Senior Manager, at or call 970.925.5756.

Naturalist Nights: Three Billion Birds Lost


Free for members, suggested $5 donation for non-members.

Register for In-person lecture
March 10, 2022 from 6–7pm




Hallam Lake