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

Category: Beaver Behavior


This morning’s title is the actual header of the mortified email sent to me yesterday by famed and familiar author Ben Goldfarb who had always considered Ted Williams a kind of conservation legend.

Ahh, how the mighty have fallen. Over beavers, of course.

Thinking Like a Trout Stream

 A case in point is its inability to accept biological realities of beaver overpopulation.

The causes of ecological damage by deer and beaver are identical. Wolves, the major predator of both species, have been extirpated or severely reduced in most deer and beaver range. Heavy logging in deer and beaver range has replaced poorhabitat old growth with deer and beaver candy such as aspen and willow.

Beavers in natural abundance have usually been good for native ecosystems, trout included. In much of the Pacific Northwest, beavers are depleted, and managers are rightly attempting recovery.

You can see right away where this is going. The argument is that numbers of beavers when controlled by wolves and mt lions are helpful. But the number we have NOW! Oy vey! He starts by quoting the praise of beavers given by Oregon and Washington fisheries.

Beavers .. . create reservoirs of cool water that salmon need to survive,” report the Northwest Treaty Tribes of western Washington State in a news release titled “Beavers Relocated to Improve Salmon Habitat.”

Such assertions are accurate in Oregon, Idaho, and Washington, at least on most high-gradient streams. But when they’re cited as alleged evidence that all beaver populations are great for all species in all states, they’re flat wrong; and they hurt the cause of native ecosystems. Do a Google search for beavers and trout, and almost all you’ll find are effusions about the alleged value of beavers everywhere and excoriations of fisheries managers who attempt to modestly control gross irruptions.

Oh those little NOAA scientists and their crazy ILLUSIONS! Obviously what you do in the Pacific states doesn’t matter because they’re already insane anyway. But what here in Wisconsin or Massachusetts we’re OVERRUN with beavers.

BUT BEAVER BLIGHT IN THE EAST IS MILD COMPARED TO THAT IN THE MIDWEST. Angler/photographer Len Harris of Richland Center, Wisconsin, describes the pre-hangover high that comes with the discovery of a new beaver pond: “It’s smile-producing at first because of bigger trout. But the flooding cycle cleans out that dam and all the barren bank. The streams widen and increase in temperature. . . . My home waters have warmed by at least four degrees in the last twenty years. This is from a combination of beavers not being kept in check and climate change. Warmer water, resulting gill lice, and resulting competition from brown trout have stacked the deck against the natives. Humans need to limit beaver expansion near our brook trout streams. Thankfully, a new regime is in place in Wisconsin as of 2019. Science will be back on the books, and our DNR will once again be staffed with caretakers of the streams, not climate-change deniers.”

So wait a minute. You’re equating beaver believers with climate change deniers? Because they’re both on teams you dislike? That’s so entirely provoking I’m not even sure what to do with you. Ben says you’re revered and I’m sure [Brutus is an honorable man} so I won’t write what I’d like to. But maybe you could spend five minutes in an actual trout stream with an actual beaver dam before you accept funds to write something ridiculous like this again? Or hey maybe snorkel in it and see all the baby trout swimming around? He goes on to describe several “misguided” environmental groups that think beavers have any value. I’m just sorry he didn’t mention US.

“There are a lot of people in our organization who really value the beaver ponds as something that attracts wildlife and increases biodiversity,” the group’s chair, Corlis West, told the Lake County News Chronicle. “Not just beavers, but for moose and mink and waterfowl and frogs and turtles.”

“They [beaver ponds] provide special habitat,” added retired University of Minnesota Duluth geology professor John Green. “They’re wildlife magnets for breeding and migrating birds. All kinds of wildlife like them, and people enjoy those.”

Notice how he goes after the little guys like beaversprite not NOAA fisheries and their years of data. He knows exactly what he’s doing here. When a giant like Ted Williams writes a giant amount of BS like this, it’s going to take another giant to knock him down. David and her little GIFs aren’t going to do it. But good LORD this is irritating. Does he really truly believe that there are MORE beavers now than there were in 1730? Even knowing the numbers of pelts reported? Really? Even knowing all the economies they funded?

Does Ted secretly know a story about the great native american salmon famine of 1630 that all of us don’t?

SALMONIDS BENEFIT FROM BEAVERS IN MUCH OF THE WEST; but beaver irruptions are nuking lots of coldwater habitat even there.

Wildlife advocates need to keep two different thoughts about beavers in their heads simultaneously. Beavers in moderation can be good for coldwater species. What’s bad for coldwater species is not beavers; it is too many beavers—unnatural proliferations caused by human activity, such as clear-cutting and wolf eradication. “Letting nature take its course” doesn’t mean sitting on our hands after we’ve disrupted natural balances.

The funniest part of this ENTIRE article, and believe me there are several, is that he presents  the “pro-beaver” lobby as if we were SO powerful. As if we had frightened Fish and WIldlife in Nevada and California so that they’re afraid to do all the killing that’s required. As if we had scared people away from killing all the beavers they need to kill!

As a woman with her toes on the very front lines of beaver defense allow me to offer a counterpoint after reviewing 10 years of depredation permits in California alone:

You’re so funny, Ted. I think maybe you and Ben are going to have a dynamic discussion some day soon. And maybe Michael Pollock will want in on it. Worth A Dam will pay for the beer. I’ll just be over here. Trying to get over the giggles.

“It’s unlikely that managers will ever be able to restore more than a tiny fraction of trout streams destroyed by beavers. But, as Leopold wrote in a 1946 letter to his friend Bill Vogt: “That [a] situation appears hopeless should not prevent us from doing our best.”

Just a final thought. The famous Leopold and his famous son who inspired this article was famously ignorant about the importance of beavers. Neither of them had any idea how important beavers are to streams or fish. And I’m quoting two of the most knowledgeable voices I know on this matter. Aldo was a visionary voice who knew and understood many, many things. But beavers wasn’t one of them.

So it’s perfect that you frame this entire argument around him,


Winter tends to be a good time to think nice things about beavers, especially once the rain turns to snow and things are too frozen to cause a problem for a while. I really enjoyed reading this appreciative column from master naturalist Shannon Brennan in Virginia.

For Love of Nature: Beavers busy sculpting along James River

On a recent warm winter’s day, Michael and I headed for our favorite local trail at Matt’s Creek, across the James River Foot Bridge on U.S. 501. We were soon greeted by an amazing wooden sculpture, with shavings all around the base of a tree that would soon topple to the ground.

Other trees had already been felled, telltale signs that beavers had been busily gnawing along the banks of the James River, both to eat the bark and potentially use the tree for a dam, though there was no sign of a dam or lodge in the vicinity.

Beavers munch on small saplings and very large trees, leaving many people to decry the damage, but the damage humans inflict on trees pales in comparison. I prefer to call it beaver art.

We couldn’t agree more Shannon! In fact there are two beaver chews by my hearthside right now! I personally know several people who collect and take photos of them. The one I shared yesterday still happens to be my favorite.

While it’s true that damming creeks in urban areas, like Blackwater Creek, can interfere with water and sewer lines and exacerbate flooding, beavers are important parts of natural ecosystems.

Early residents of this continent considered beavers sacred because they create wetlands, the key to life for many species. Almost half of endangered and threatened species in North America rely upon wetlands, which also soak up floodwaters, alleviate droughts and floods, lessen erosion, raise the water table and purify water.

Although I’ve seen signs of beavers for years, I’ve yet to spot one. They are largely nocturnal and stealthy.

 I wish you had come to Martinez a decade ago and been able to watch entire families gathered together on the bridge to watch our beavers working and playing with each other. You would have been so happy.

Beavers rarely overpopulate because they breed only once a year and defend large streamside territories from other beavers. Trapping beavers often fails because removal stimulates larger litters among those left behind.

For me, it’s always a thrill to see where beavers have been busily chomping or sliding into a creek or river. I don’t have to see the animals to know that they are alive and well and doing their sacred duty.

I’m with you, Shannon. i think beaver sign is a wonderful secret handshake that tells people in the know that something dramatic is going right with that creek or waterway. Thank you so much for being happy about beavers. It doesn’t happen very often but it’s always a wonderful thing to behold.

Speaking of friendly words about beavers. since October I’ve been keeping a spreadsheet of the folks who contact me thru the website to ask about their beavers or how to save/introduce/or advocate for them. I’m always surprised how far afield these contacts come from, and I thought you’d be interested in the visual.

Not bad visibility for three months.


So yesterday a former member of Worth A Dam who now works at the animal shelter mentioned that an animal control officer brought a beaver found in Martinez to Lindsey Wildlife hospital and described him as wet looking and confused and shared this photo.

So i called Cheryl to ask if she has any friends working there right now and found out that they had changed vets again and that she didn’t know for sure.  it’s always hard to cold call Lindsey wildlife hospital because they tend to be – propietary – about the animals in their care. So it works better if someone is introduced to me, or knows Cheryl before hand. It’s frankly a little intimidating to call as a nonprofessional.

But even without an established contact it had to be done anyway. i worked up my best serious voice and called the hospital, explaining who I was and that I heard they might have been brought a beaver. The woman was oddly very solicitous on the phone and explained that one had just come in. I soon found out why when she said, surprisingly, ‘Yes I know who you are. It’s an honor to meet you! I just finished reading  Eager.

Well! That was a surprise. We chatted for a moment about Eager and how good the book was and she said how surprising it was to find a chapter about Martinez and how much she enjoyed it. I asked about the sex of the beaver, which she said ‘you know reading eager you learn its hard to tell!” And then I asked about the weight which would be more straight forward.

13 lbs.

She read a little from the notes saying that it looked ’emaciated” and ‘confused”. They had it down as an adult but I told her that wasn’t adult size. For a good while I was relieved because if it was that small it wasn’t a parent or our two year old which meant it wasn’t ours.

A quick glance at the calendar told me that today is February 1st and I’ve always said that in our area February is dispersal month So maybe it was a early disperser coming up the creek and getting lost?

i told the helpful rehabber that we would be happy to help if we could, with transport or funds or information. And she added my name and phone number to the file. i posted about the beaver on the Martinez FB page because I figured somebody saw or could tell me something. And learned that the beaver had been photographed near Armandos in the middle of the street that morning.  Poor little guy.

I  called back Cheryl and told her what i’d learned and we chatted about the mystery. She wondered if there could have been another kit we didn’t know about born in 2018. At first i was remembering the weird birthdate of our first kit and thinking 13 lbs still wouldn’t be large enough for a 16 month old kit. And then I went back and looked at the footage and realized this kit was born at the regular time, which, if there was a sibling we didn’t know about, would make him about 10 months, which could easily be around 13 lbs.

So this was the kit we knew about that Moses filmed in June. it’s possible he had a brother or sister that we didn’t know about? But we haven’t seen any activity around the Susana street dam so i was thinking, since Cassy shared that photo of the beaver at Arch street, that they might have moved upstream? And why would it look “emaciated?” A 13 lb 10 month old kit is just about right?

I will try and find out more today. i’m not even sure it made it through the night. Stay tuned.

Oh and GOOD LUCK TO JON today. Who will either become an American- eligible citizen today, or just another really frustrated commuter. The Queen wishes you good luck and i and the Beavers have faith in you!


It used to be that North America had enough wildlife and wild places that it was easy to think that everyone could help themselves. During the fur trade there were no bag limits and just imagine what it would be like if the only thing standing between you and your fortune were a few unlucky beavers.

Now things are more complicated, but we still aren’t sure how to proceed. This article by Kyle Artelle points out that a great deal of our ‘policy’ isn’t based on the science we pretend is determinative.

Is Wildlife Conservation Policy Based in Science?

An overview of the model reveals something that might come as a surprise to much of the public: Wildlife management in Canada and the United States primarily means management of hunting, and it is focused on the small subset of the human population that hunts, not on the conservation of species and their habitats for their own sake. Some of the blurring is likely intentional, an adaptation of organizations to evolving cultural mores that place a high value on conservation. For example, the Boone and Crocket Club, the world’s first hunting club, describes itself as a pioneer in conservation, and adheres to the aforementioned wildlife model that guides hunting across Canada and the United States, the North American Model of Wildlife Conservation. However, even though conservation and wildlife management might overlap, understanding where they don’t can be critical, especially as it pertains to management ostensibly done on behalf of the public.

Conservation is certainly not incompatible with hunting. Cultures across North America were sustained by animal populations for millennia before European colonization triggered the widespread degradations seen in recent centuries. However, the two can certainly be at odds.

Hmmm conservation and hunting are so much at odds that a senator from San Diego is introducing a bill to ban the fur trade in California entirely. She says it’s cruel.

Fur trapping was once the heart of California’s economy. A new bill could ban it.

A new bill in the California Legislature would put an end to a California industry that predates the Gold Rush. Assemblywoman Lorena Gonzalez, D-San Diego, submitted a bill that would prohibit the state from issuing fur trapping licenses.

Now I’m just a retired psychologist but I’m thinking that cruelty from beaver trapping for the fur trade is the very last thing on my list of things to worry about.  i’m much more worried about giving out permits to Depredate any beaver that interferes with your property. Thousands of beavers lost their lives because of chewing the wrong tree or damming the wrong stream last year.  I’m sure not even 100 were trapped for their fur in our state.

Her bill will still get some attention from the hunting lobby I’m sure. But this discussion in American Scientist raises points that are a lot more threatening to the pass time. The author points out that we like to pride ourselves that our hunting policy is ‘science based’ and that we don’t let people take more animals than is good for the population.

But this in itself is problematic because no one is counting the population anymore.

The effects of managed exploitation might extend far beyond targeted species. The environmental journalist Ben Goldfarb has recently published a book on the ecological importance of beavers, titled Eager: The Surprising, Secret Lives of Beavers and Why They Matter. By phone from Spokane, on the heels of one of the worst wildfire seasons in history, he waxed ecologically about the myriad benefits his buck-toothed protagonists provide. They serve as keystone engineers of ecosystems across the continent, creating firebreaks that help to attenuate large-scale wildfires, providing habitat for endangered salmonids, supporting sedges eaten by one of the rarest butterflies in North America, and improving water quality by entrapping sediments, filtering agricultural runoff, and raising water tables.

Beavers also serve as textbook examples of the conflict between conservation and wildlife management objectives. The book contains slapstick scenarios of various government-led initiatives operating in direct contradiction to one another. During our phone call, Goldfarb said incredulously, “In Wyoming’s Bridger-Teton National Forest, you have the Forest Service working to reintroduce beavers into watersheds as a restoration tool. At the same time, you have the state permitting trapping of those very same beavers. There are cases of folks carefully planning and carrying out the restoration of beavers to a particular stream, only to have the phone ring with a trapper calling to say, ‘Hey, I’ve just bagged one of your ear-tagged animals!’”

Goldfarb explained how this story illustrates the contradiction between beavers viewed through a lens of conservation and beavers viewed through a lens of human interests. He also noted similar contradictions elsewhere across the country. For example, thousands of beavers are killed to address complaints such as blocked culverts and property flooding. Effective, nonlethal alternatives are used far less frequently.

YUP, that’s the world we live in. Some agencies are trying to reintroduce beavers to restore wetlands and some are issuing permits to kill them. And hey here n California they don’t even allow folks to do the first part because beavers are pests. Ya know?

Despite their pesky qualities, Ben’s remarkable book is just getting dropped into so many interesting conversations. It even found its way into the SF gate yesterday when they republished Jay Matthews article from the Washington Post about using well-told stories to teach science

Stories can be an crucial part of the experiment in the way we teach science

“Science education focuses on doing, which is the way we’ve been teaching science for decades,” she told me. “We will continue to do so under the NGSS. Science students will spend much of their time doing experiments, studying their results, and coming to conclusions, but in a highly organized way, and now they will be asked to explain what they’ve been doing.”

“They will be missing out on science’s stories, its challenges, its heroes, its villains, and its aspirations. Knowing the narrative behind an achievement – breaking the genetic code for example – helps nail its underlying meaning and importance,” she said.

My favorite recent books have been David Quammen’s “The Tangled Tree” (molecular biology), Ben Goldfarb’s “Eager” (beavers) and Steve Brusatte’s “The Rise and Fall of the Dinosaurs.”

All in all, I would say the right people are talking about beavers to the right people because of Ben’s book. And that’s an awesome thing to behold. Lets finish our story of wonders with a fantastic photo from devoted bat advocate and beaver friend Jo Ellen Arnold who has missed the beaver festival for the last few years because of her wonderous eco-travels. She lives on the American River in Sacramento and often sees sights like this in her back yard.

About this photo she writes

“My friend and neighbor, Robert Sewell, got a text from another neighbor the other day reporting that there were 5 beavers basking in the sun on the north side of the American River at Sutter’s Landing. By the time he got there, he found only this one bathing beauty, but what a catch! We see evidence of beaver all along the river, and Robert says the openings to their dens are now visible since the river is so low. I’ll have to get him to show me where to look. I’ve seen them swimming at dusk, but never during the day, and never out of the water.”

 


So it’s nearly time for grants to start being turned in and thank the lord i finished most of ours before heading into the hospial. The idea this year is a treasure hunt with children searching or pieces of the old map to the “lost key to the waters.” Children will go to participating booths (marked with a treasure map) and receive a ‘clue card’ and a torn piece 0f the map – when they collect all 8 will they can tape them together and read a clue on the back of the map telling them where to find the ‘lost key to the waters’.

Can you guess what it might be?

Here are some images of the ‘clue cards’ we just had printed at moo )30 percent off December sale with free shipping) and hopefully Amelia will make us an amazing treasure map because she loves that kind of thing.

Don;t you just with you were a kid again so you could solve this puzzle? I’ll give you a hint about the :key to the waters”. Shhhhhh

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