Bald Eagle count soars in Lake Tahoe |

Bald Eagle count soars in Lake Tahoe

Tahoe Institute for Natural Science sees record tally in 2021

The Tahoe Institute of Natural Science reports that a record number of 42 Bald Eagles were spotted during its annual survey.
Photo by Jeff Bleam

It’s a banner year for Bald Eagles in Lake Tahoe. The Tahoe Institute of Natural Science (TINS) reports that a record number of 42 Bald Eagles were spotted during its annual survey. The previous high was 27 set in 2017. Approximately 200 volunteers also turned out for the event, double last year’s number, which is part of why TINS believes this was the most accurate count to date. TINS took over local coordination of the national tracking effort nine years ago.

“Based on reports of sightings from recent weeks we expected to see quite a few eagles during the count, but this total was surprising.” said TINS outreach director, Sarah Hockensmith.

“As always our tally is based on careful examination of the timing of movements of individual birds from one station to the next, and we believe we have a conservative and accurate tally for the day.”

Interestingly, many of the eagles were concentrated around parts of the lake that usually see few during the count, namely the middle parts of both the East and West Shores. Whereas spotters found relatively few in the marshes around South Lake, where there are usually numerous eagles.

Here’s a breakdown of the eagle counts from the past few years:

2021: 42 Bald Eagles spotted

30 adults and 12 immatures

2020: 24 Bald Eagles spotted

17 adults and 7 immatures

2019: 19 Bald Eagles spotted

13 adults and 6 immatures

2018: 22 Bald Eagles spotted

16 adults and 6 immatures

2017: 27 Bald Eagles spotted

23 adults, 2 immatures, and 2 of unknown age

The national symbol of America became a protected species in 1940, but populations continued to decline dramatically with the introduction of the insecticide DDT.

Tahoe’s count began in 1979, and for the first few years there may have been only two or three Bald Eagles per year, with zero eagles seen on the 1980 count. Thanks to protections, eagle numbers at Tahoe started to rise, peaking at 27 in 2017. In recent years, counts have averaged in the low 20s.

“In a lot of ways, this count monitors the success of the protections that we have put in place for these eagles,” said TINS Co-Founder and Executive Director, Will Richardson, “and it is a lot of fun.”


About the Tahoe Institute for Natural Science

Founded in 2010, the Tahoe Institute for Natural Science (TINS) is a member-supported nonprofit organization providing world-class education and research. TINS provides programs for all ages, from presentations to citizen science projects to guided nature outings.

Scholarships and a diversity of free programming aim to make these activities as inclusive as possible. The organization conducts ongoing biological research in the Tahoe-Sierra region, contributing important data to help improve management decisions regarding wildlife. TINS is working to bring a world-class interpretive nature center and educational facility to the Tahoe area, with the ultimate goal of creating a community that cares for the natural world by fostering a deeper understanding and appreciation of the natural resources at Lake Tahoe and beyond.

Source: Tahoe Institute for Natural Science

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