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

Month: April 2015


Worth A Dam was visited by Canada and the Finnish Laplands yesterday. The first was a request from the CBC to use our ‘beaver crossing’ photo in an article. The second was a facebook contact about a beaver sighting in Finland, where they weren’t supposed to be and has scientists Duncan Haley very excited. We are a multi-national beaver operation apparently.

Regina beaver uses crosswalk, stairs to reach Wascana Lake

Capture I was just happy we got an actual request to use the image. Much better than simply stealing it.7580905_GApparently beavers are on the move all over. This report just turned up in Louisiana,

Beaver out for a stroll

Of course we know that these beavers are dispersers and immature two year-olds looking for their own territory. We see it every year, although we never know exactly when it happens. Sometime around February or March. I assumed it had already happen with our 2013 yearlings. That would mean our population is down to three. But last night Jean saw FOUR beavers. Which means we have to review our figures and rethink.

In all the years we’ve been watching beavers we’ve had one that didn’t disperse, a 2010 kit that stuck around for years afterwards. I often referred to him as the Useless Bookend because he was the exact same size as a very helpful kit who dispersed according to schedule.  Do we have another UB? And Jean saw Mom, Dad, Jr and the UB? OR do we have a couple UBS and the kit wasn’t even seen? Or did all three stick around and Mom and Dad left? I’m soo confused.  Here are some photos she snatched with her iPhone.

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Of course it especially matters because its KIT TIME. The very best time of the year. Check out the photo that Rusty managed to snap yesterday at the Napa Beavers. Looks like Napa’s got kits. I wonder about Martinez?

Sonoma teats

Which makes it just the right time for this video I made with Moses’ footage years ago. There is only one Heidi Clip in the entire thing. Can you find it?


I think we just might nominate this for beaver photo of the month. I love the colors, which would be beautiful on a tee-shirt! Good work Rusty Cohn of Napa.

Beaver tree cohn
Lucky Beaver – Rusty Cohn

They are actually getting some amazing photos in Tulocay creek. This is from Robin who photographed a green heron’s breakfast at the beaver pond. I send it to the experts for identification and they have confirmed the fish is a bluegill.

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Green heron eating a bluegill – Robin Ellison

And to top that off Rusty just sent this video from yesterday, wondering what the beaver is eating at .34. Look at him pull that rootball out of the ground and walk it into the water to eat. Obviously it tastes better once you rinse the mud off. Igor thinks some kind of blackberry root tangle.


But I’m not a total Napa-phile yet (although Rusty tells me there’s a house for sale right by the pond. Anyone interested?)

No, I remain firmly convinced that the most remarkable photos always come from Martinez. Just look at this one: Surviving the incredible odds of being cut, planted, pulled up, piled up, ignored, and subsequently replanted upside down. This cottonwood is making a go of it. Proving the old saying, you just can’t keep a good tree down.
IMG_0257Now that’s what we want to see!

As amazing as these local photos are there’s one from the news I think is worth sharing. See if you don’t agree.

 Councillors’s race to raise cash dressed in beaver suit

 Councillor Debbie Davies dressed as the Baildon Beaver at Wetherby Races ready for the Mascot Gold Cup in aid of Sue Ryder Homes

 Beaver councillor.jpg-pwrt2

Hmmm that gives me an idea…


SARSASThere are days in the Beaver-Biz when you get the feeling that something is really happening, and that you yourself are part of the momentum. You can almost hear those creeky rusted wheels start to shift and turn, you aren’t sure at first whether you believe it. You draw a breath to watch what happens next and then comes that wonderful moment when you just sit back and watch it all unfold.

That’s how yesterday’s Placer meeting was. We started out the day by driving to Auburn at 6:30 to avoid Sacramento traffic. We were a little panicked to find the destructive lane closures and partitions on 80 which I later described as a cement tomb with speeding. There were accidents and stopped cars on the way but we eventually made it to our destination. (And lived to have it explained to us that this was just the second year of a multi-year project. Lucky them!)

SARSAS BtalkThe presentation was going to be at the central location for county offices in Placer called “the domes” for obvious reasons. (I have heard that there are tribes who believe a house should have no corners because evil spirits lurk in them. Geodomes have multiple corners so maybe that’s why they kill so many beavers in Placer. Ahem.)

 They was a big square conference room and equipment all set up with a county technical consultant to get everything plugged in. And then the room started filling up. Afterwards folks said it was the best attendance they ever had. I was especially happy to notice county employees coming in at the end, in addition to all the fish and beaver supporters.

The prescient soul who had actually invited me over a year ago was actually on vacation with his family in Europe and couldn’t be there. His fellow leaders did a great job of orienting the presentation and getting me settled.  On the way in I met Sherry and her neighbor who had driven down from Tahoe, Janet who is local and always takes the train down to help at the festival, and Jeanette who did such dynamic working helping with programs last year. Hats with tails(I actually heard her laugh out loud when I showed the photo of her and her niece, coincidentally during my talk.)

I had restructured things to make my talk more “fishy” so started out with the salmon info and the clip about bridge creek and beaver assisted salmon recovery. Then got into our story. My talk ran a full hour and there were attentive faces throughout. And laughter in the right places, I was happy to note.

highlighted permitsI was especially aware of where I was sitting when I got to the part about the depredation permits. I said “Our statistician noted that one county issued seven times more permits than anywhere else in the state. And that, as it happens, was this one.” I was so happy to see the horrified faces, I can’t tell you. Even more so when I pointed out that according to CA law you need to report the numbers of beaver you trap, but not the number of beavers you depredate.

Afterwards there were questions and appreciations, and some talk about beaver dams and salmon passage or adequate gravel for spawning. I was thrilled to learn that there were attendees in the room who had actually heard Pollock’s talk in Weed and knew all about channelization and salmon enrichment. On particularly knowledgeable young man introduced himself  as Damion Ciotti from the Habitat Restoration Division of US Fish and Wildlife Service. We connected several years ago and he was very interested in our work in Martinez.  I made sure he left with a copy of Mike Callahan’s DVD. You can’t imagine how helpful his comments were in soothing the beaver-disbelievers in the room. I couldn’t have orchestrated it better than to let fish savvy folk do the defending for me!

Afterwards folks chatted about their own beaver encounters and promised to come to the festival. Jeannette said she saw a beaver at Lake Natomas in Folsom from her kayak and felt honored. Janet presented a cluster of little beaver items she had picked up on her journeys, saying they could be gifts  or I might pass them into the auction! And Sherry said she had agreed to give a talk at the educational portion of Taylor Creek where they did the flow devices installations.

Then Jon and I made our way back to the flat lands of Martinez, chatting happily about the day and its possible consequences. We were both exhausted, but in a good, accomplished way, and happy with our results. One of the final questions came from one of the group leaders, who wondered, now that the problems were averted and the city wasn’t afraid anymore, have our city leaders embraced the beavers? Do they support their presence now?

Which made me chuckle, and I answered carefully that they did eventually give up trying to kill them, which, if you think about it, is a kind of support.

calvin-and-hobbes-laugh


After a vary slow few months at the pond activity has been slowly picking up in Napa. The Beavers are coming out aprox 45 minutes before sunset on a regular basis. The Beavers seem hungry and eager to find food. The dams were washed away and rebuilt during a storm, and the lodge made it through the Winter with no damage. (see part two below)

Saturday while walking to the Earth Day event in downtown Napa I stopped by the Beaver Pond to see if anything was happening. An occasional Mink, Muskrat and various birds stop by during mid-day if you are lucky. I walked upstream past the dam and lodge and just Western Pond turtles so far

IMG_5597

and turned around to continue my walk when I saw what looked like a Beaver swimming, but during mid-day it’s usually a Muskrat. I was 100 yards away or so but realized it was indeed a Beaver and started filming it but quickly noticed something was wrong. It was having trouble swimming and appeared to be drowning. It struggled a couple of minutes at most and then sank. Not a good start to the day. After contacting Heidi and Cheryl there was some discussion about what could have caused this and if the body could be located and taken to Davis for necropsy. Since it sank in fairly deep water with low visibility and in the middle of the pond it didn’t seem like it would happen. Cheryl decided to come to Napa that evening to observe and see if she had any thoughts about what is going on. Robin another  Beaver advocate met us around 6 pm and we all just waited to see if any Beavers would show up that night. We had been seeing two Beavers on a regular basis for the last two weeks and just the day before we thought we might have seen three out at the same time, but because of the distance and lack of light it could have been a Muskrat fooling us. Around 7 pm we saw the first Beaver, and shortly thereafter a second. What really surprised us is when a third beaver came out clearly in view of the other two. This is the first time since the kits were born last year when we saw three very active Beavers clearly at the same time, and one had died the same day. This brings up questions about who died? How many Beavers are at the pond. Was the Beaver sick or an intruder who was attacked by the resident Beavers. Anyway the evening got better. A parade of ducklings brought our spirits up.
mother leading baby ducks

The Beavers were active and hungry so they kept an eye on us but let us get close enough for photos too.
beaver smelling
beaver eating

A Green Heron joined in.
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A Muskrat taking food or nesting material back to the Beaver lodge
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Part two.

During a couple of storms the Beaver dams were almost washed away. Main dam Oct 4th before storms and before cattail clearing by Napa Flood Control.
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Main dam Oct 13th, 2014 after Napa Flood Control cleared some of the cattails below the main dam, being careful not to damage the dam, but leaving a path for possible flood water flow.

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Main dam Dec 2nd 2014 large breach from storm, water level has dropped aprox 6 inchesBeaver dam breech_1

Main dam Dec 5th
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Main dam Dec 11th during storm totally under water
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Main dam Dec 18th after water flow receded could see dam was washed away
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Main dam Dec 24th repairs started
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Main dam Dec 25th repairs continue
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Main Dam Dec 26th
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Main dam Dec 27th only small breach on left side remains
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Main dam Jan 1st 2015
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Main dam Jan 24th
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Main dam Feb 10th after a smaller storm
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Lower dam Jan 4th 2015 after storm
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Lower dam Jan 8th repairs in progress
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Lower Dam Jan 22nd
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There is abundant news on the Michael Runtz beaver book front. This warranted such a media turnout I have to think the book can’t be far behind this time. But I’ve been Charlie Browned by Lucy’s football before.

Acclaimed author Michael Runtz provides in-depth presentation on beavers

He explained he wanted to see the Eurasian beaver, after so many years of studying the Canadian beaver.

“I wanted to photograph them,” said Runtz. “They’re a little more reddish brown, with narrower tails. The reason, I believe, for the narrower tails is the Eurasian beaver favors river habitats, which have faster moving water than the beaver pond habitat of Canadian beavers, so the narrower tails are beneficial in the faster moving water.”

 He said Eurasian beavers tend to share their habitat, whereas Canadian beavers create their own.

 “I’ve discovered quite a few things about beavers over the years, including they use their teeth differently when cutting down trees versus eating,” said Runtz.

 He said beaver’s diets are interesting and they always bring their food back to the water to eat.

 “It’s their safe haven,” said Runtz. “They love aquatic plants. They are almost like farmers, nibbling on these plants and then leaving bits and pieces in the water from which more grow.”

 He said beavers select their food based on scent.

 “If there are seven different types of willow trees in an area, they may only eat three or four varieties,” said Runtz. “Poplar is one of their favorite foods.”

 He explained he took part in an experiment, taking bark from trees beavers tended to favor (poplar) and ones they avoided (balsam fir), boiling down the bark to make a sap, painting the opposite trees with the sap (balsam fir with poplar sap and vice versa).

The beavers cut down the balsam fir that smelt like a poplar and dragged it back to the water,” said Runtz.

It’s a good article and with only a few things that I’m not sure I’d agree with, you should go read the whole thing and when his book comes out we’ll all be first in line!

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Yesterday was an upsetting day at the Napa beaver pond, which Rusty happened to catch on film. One of the beavers appeared to drown, which I wouldn’t have thought possible but seems to be the case. Cheryl went by in the evening and they saw three strong beavers at once, which they never did before. So there is still more of the family (and hopefully mom) to carry on. The whole thing is very mysterious and we’re going to have to wait or do without answers. In the interest of study and understanding, assuming you are the kind of person who wants to see, click on the gate. And if you are  not that kind of person (And I’m talking to you, Jean), do NOT click on the gate. Really.

black gate

I leave you in Rusty’s capable hands tomorrow. Lots of life to see still at the beaver dams in Napa. I’ll be getting up before the sun to drive to Auburn for the SARSAS talk. Wish beavers luck!

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