Because the beaver isn't just an animal; it's an ecosystem!


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There is lots of good news about the watery progress  beavers have made in Plumas county in the CDFW translocation summary. Nearly half the report focuses on its successes which will convince millions that beaver relocation is the secret weapon against climate change we never knew we had. Move more beavers! Move MY beavers! The adoring fans will exclaim.

I thought you might find my comments (in blue)  informative. This is from the end section of the report:

In November 2025, a family group of four beavers was translocated to a site within the Tahoe National Forest in Sierra County (Figure 15). The translocated group (Table 10) was comprised of one adult female, one subadult male, and two female kits

“Nature based solutions can have self-sustaining benefit’s but they take time, expertise and care to re-ignite once disrupted. The current summary of restoration projects provides a detailed description of goals and progress in Tásmam Koyóm but is less descriptive about the other efforts.
I wanted to offer remarks on Act V of the production. This final section discusses the release of beavers in the Sierras. Rather than repeat my concern about translocating beavers from temperate to alpine zones, I offer this quote from the recent Wildlife Act in the province of British Columbia:

In Act V of your report it is not only assumed that displaced beavers from the delta will know effortlessly how to prepare for life in the Sierra uplands, but even more alarmingly that they will require almost no time to do so.

“Given the timing of the release and seasonal constraints with accessing the site, post-release monitoring of the beavers was limited.”

If conditions in Tahoe were too bad for staff to go back and check for beaver sign after the release, might they not also have been too bad for those beavers to build a lodge, create a food cache and find adequate safety? What can possibly explain this late release date?

In their frankly detailed paper on beaver release in 2014 by Petro et al the authors note that beavers released from August-October tended to stay nearer the release site, and no real differences in predation were reported for Spring and Summer releases by McKinstry & Anderson , There are differing thoughts about optimal release dates. But no where in any paper has it ever been ever suggested that WINTER releases are ideal. Why hang the public success of such a visible program on such an ill-advised timeline?”

A November release in the Sierras is a waste of agency resources, tax-payer dollars and frankly inhumane. Even October is considered late in the year if severe weather is likely and the beavers in question need to make food available for hungry family members all winter long. (This of course assumes that, contrary to the B.C. warnings, they would even know to do so.)

For what it’s worth  I thought I would give them my version of a beaver-centric perspective. So far my inbox is missing their careful explanations and heartfelt apologies. That’s to be expected. Nobody asked for my opinion.

But they got it anyway.

 

 

 


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Reading through this airy update of CDFW’s beaver release program I realize that I am thinking of this with a different reference point than its executors. They are thinking of the well bring of California’s soil and water and wildlife.

I am thinking of it the well-being of beavers.

In their minds the beavers in question were going to DIE anyway so if 40% of them live isn’t that an improvement?

Think of it like some futuristic alien abortion experiment. If the discarded fetuses could be salvaged and forced into a healthy uteruses and 40% of them lived long enough to be delivered and born into a unrejecting family, wouldn’t that be a success?

Even if the specimens that survived lived lost disjointed lives with people that never loved them and ultimately ended in hardship and despair? At least they could serve the nation state.

Or something.


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Ir’s that time again. The beaver team at CDFW has released another report about how their beaver relocation plan is humming along. It comes with a list of all the excited proposals they have received for more additional beavers and a brand new shiny tool showing where beaver habitat could exist in the state: The California Brat Model.

Unlike the 2023 report there are fewer predations by bears. This time a mountain lion participated in the beaver-feeding project. There are some Glossy 8×10’s about all the watery changes beavers made in Plumas. I am still trying to process why exactly CDFW seems unable to take things like WINTER into account in their release dates.

This article from Edhat has a reasonable summary.

California is Turning to Beavers as a Nature-Based Solution to Drought and Wildfire

 California is turning to an unlikely partner in its efforts to make the state’s landscapes more resilient to drought and wildfire: beavers.

The California Department of Fish and Wildlife (CDFW) has been relocating beavers into carefully selected waterways as part of a statewide restoration program designed to use the animals’ natural dam-building abilities to improve watersheds and create healthier habitats.

I’m not sure what “Carefully selected” means in this sentence. But from reading the report I think it means “Tribal lands – so nobody else gets mad at us.”

Moving mud: Glenn Hori

As many as 42 beavers have been moved through 10 translocation events and sites since the program began.

The idea is fairly simple: Let the beavers do what beavers do.

Known as “ecosystem engineers,” beavers build dams and lodges consisting of woody material, dig canals, and plug culverts to expand the area and depth of a suitable habitat.Their ability to build dams and change waterways helps expand wetlands, riparian, and wet meadow habitats, according to the CDFW.

Beavers. They aren’t just for breakfast anymore.

Using aerial imagery, officials estimated that surface-water area at the site increased by 30.5%, from about 8,334 square meters in November 2023 to 10,880 square meters in November 2025.

Isn’t that great? Aren’t beavers great? Don’t you feel inspired? I bet you can’t wait to hear what they did next!

bear

Despite some of the success stories, the restoration efforts are an evolving program, the agency clarified. Of the eight translocation sites across five restoration projects implemented so far, beavers have built dams at five sites. Burrows or lodges have been built in four areas.

The animals do not always stay where they are released, and survival has been mixed, per CDFW.

No  Kidding.

The agency estimates that post-translocation survival across all years may be as high as 66%, but believes the actual figure is more likely in the 50% to 60% range because the fate of some beavers remains unknown.

Among 11 known post-release deaths, predation accounted for 55%, while illness and capture-related stressors accounted for 27%.

There are lies, There are damn lies. And there are statistics. As Mark Twain once said. Notice that we aren’t being told what percentage of the beavers released were eaten, just what percentage of deaths were due to being eaten.

For now, CDFW is still learning where the strategy works best.

I know

I know call on me!!!
They work beaver when beavers get to choose for themselves!

Well to be fair the reporter does a fairly good job covering the unrosy part of this report. Although she does not mention the creative ways the report defined the terms FAMILY UNIT or the exciting decision to released beavers in TAHOE in NOVEMBER.
More on that soon.
Here’s the inspiring video CDFW released. It hits most of the right notes.

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