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

Tag: Sherri Tippie


Beaver Problems

This beaver was trapped along Brush Creek in Eagle Ranch last week. It was about a year and a half old. It was released on site and will be able to live in the area at least until next spring, since it is too late in the year to relocate the animals safely. Meanwhile, the town of Eagle is taking steps to prevent beaver damage to the storm ponds in Eagle Ranch, which is a pollution control system that was being affected by the critters

There are two environmental situations clashing along Brush Creek in Eagle Ranch — beavers and pollution control. Beavers are the root of the problem. “We want to leave the beavers alone but we also don’t want pollutants going into Brush Creek,” said Eagle Open Space Director John Staight. “This is a real problem, not just a nuisance.”

The storm ponds are the main concern, however. They are a filtration system for water going back into Brush Creek from the Eagle Ranch development. By flowing from one pond to the next, pollutants such as fertilizers and petroleum are strained from the water before it goes into the creek.

The mound of debris in the foreground was recently cleaned off the drain of a storm pond in Eagle Ranch. Beavers were damming the ponds, which are a pollution-control system. Wire was put up around the drain to keep beavers from damming the pond again.

“The beavers had raised the water level of the ponds a little more than a foot over the weekend,” Boyd said last week. “I noticed that some sticks and debris from the bottom of the pond were piled over the grate (where water drained from one pond to the next).”

The beavers were damming the outlets of the last two ponds. The final pond is only separated from Brush Creek by a narrow berm. “At that rate, it wouldn’t be long before the pond water washed out the berm and went straight into the creek,” Boyd said.

There is so much to like in this article, it makes sense that Eagle is about 90 minutes away from Sherri Tippie and should easily know what to do or at least who to ask. Good for them for wrapping trees, and good for them for thinking of live trapping. Almost.

The first response was to trap and relocate the beavers. One large male was trapped and relocated two weeks ago, and last week a smaller, younger one was trapped. The second was simply released on site.  Colorado Parks and Wildlife Officer Craig Wescoatt informed the town that it’s too late in the season to relocate the animals.

“I recommended that any trapped beavers be put down in a humane manner,” he said. “A relocated beaver would have trouble adapting to a new environment and would likely starve over the winter.” 

The town’s new solution is to let the beavers remain and hope they go somewhere else in the spring.  “This isn’t the best habitat for them anyway,” Staight said. “We’re trying to make the area even less appealing to them for now. In the spring, when the water rises in Brush Creek, they’ll hopefully go downstream where there’s better habitat.”

I’m still left with a unmistakeable uneasiness. One big beaver moved and the younger one rereleased in the same area? You need to be told by CPW not to relocate in November? Trees wrapped with chicken wire? A quote from the public works explaining that a Beaver Deceiver has to be a trapezoidal shape to keep ‘beavers away’? Hmm, I’m beginning to suspect a Land Trust that knows part of the story about beavers, and hasn’t taken time to learn the rest. A quick  look at their glossy website shows me a motto that reads “Saving land for people forever” and exactly zero mention of wildlife of any kind, including beavers.

Travis Barton grew up in the area and has been trapping beavers all over the county for a long time. He’s the guy people call up when the animals need to be removed. He said he’s trapped at least 30 beavers on Brush Creek alone through the years. It’s been a side job that pays him for each animal he catches.

His full-time job is managing a lumber yard in Summit County. He chuckled and acknowledged that his occupation with wood might give him something in common with his prey.“In a year, every tree here would be lopped off if you didn’t do anything,” he said of the Eagle Ranch situation. “It’s hard to say how many beavers we have here but probably quite a few.”

He said trapping the animals in limited numbers keeps the population healthy.“Otherwise they’ll overpopulate and eat themselves out of house and home and then move on,” he said.

Beavers are vegetarian. They eat wood and some plants like cattails. For baiting traps, scent is more important than anything else.“They don’t have great vision but they have an acute sense of smell,” Boyd said. The traps are baited with a musky scent.After releasing the second beaver back to its Eagle Ranch lodge, Barton packed up his trap. He might not need to come back at all.

“Hopefully we’ll only have to deal with the activity for the next couple months, before they hunker down for winter, and then we’ll re-evaluate in the spring,” Staight said.

Those are your closing arguments: let’s talk to a trapper? I told you this article made me uneasy. The good part is that they are close enough to real solutions to be forced to pretend they’re considering them, which is something. I wrote helpful and respectful advice to all the professionals named in this article yesterday. You can count on zero fingers how many responses I’ve received so far. These folks don’t want beavers. They want to play with ponds to filter all the pollution they allowed to gather in the first place.

You know what’s really really good at filtering out toxins? Go ahead, I’ll wait while you think.


Here’s the news you’ve all been waiting for! The schedule is up and running for the third and best ever State of the Beaver Conference in Oregon, featuring such wonders as Sherri Tippie, Mary O’brien, John Hadidian, Jimmy Taylor and Mike Callahan. If you don’t recognize any of those names check out the Podcast page on this website because they’re all featured. Oh and yours truly. Should be a dam memorable event.

When’s the last time you drove up the coast? I’d book your reservations today!

Finally received some photos from the beaver festival in Utah! Check out those tails and wonder for a second where you’ve seen that design before? I’m so glad they enjoyed themselves and got kids involved. Now they just have to pump up attendance numbers so that more people can benefit from their effort!

Here’s another photo I particularly liked! Children earning things by learning facts about beavers. Gosh that sounds familiar. Go look at the rest here and think about how cool it would be to have Sherri Tippie and Mary O’brien at your festival in person!


This fascinating picture is from the photoblog Along the Airline Trail by Stan Malcom of CT and captures the surprising and watery moment when a cozy beaver lodge stopped being a cozy beaver lodge. It makes me think of those images from Katrina of folks retreating to roof, waiting for help. This can’t be an uncommon occurrence for beavers given that they live in water and water changes with the season. As good as they are at controlling and directing water, there must be moments like these, when even beavers have to wait out the floods in relative discomfort.

This makes me think of that big storm back in March of 2011 which washed out their dams and their beautiful lodge. The next morning we saw footprints in the mud where there home had been and I imagined our kits coming back and saying, where is our house? Kind of like how the inside of a tent, which could be a child’s cozy fort, disappears when the tent is collapsed and folded away.

Since our beavers lost their lodge, and the hardworking mother who always made them for them, they have become ‘bank dwellers’. Which, I’m learning, brings mysteries if its own.This illustration is from the chapter on beavers by Joseph Grinnell, published in 1937. He gets a lot of things woefully wrong in this chapter, saying California beavers don’t live above 300 meters elevation or leave footprints, but I have always thought this is an excellent drawing. Recently I got to wondering how beavers breathe in bank lodges. Island lodges have vent holes on the top so that fresh oxygen can get through. Sometimes I read descriptions of lodges in winter with steam rising from the vent, as if the beavers were inside smoking! Do bank lodges have vents?  With all those hot bodies breathing into the same space, they must need fresh air from time to time!

Of course I did what I always do with these questions, and passed them around. I thought this morning I would share what wiser folks had to say about the answers. Enjoy!

Skip Lisle: Beaver Deceivers International

They make the tops of the chambers close to the surface of the ground so they “breath.” Because the ceilings are thin they are relatively easy to break through and therefore chambers often “open up” and can be viewed from above.

Owen Brown: Beavers: Wetlands and Wildlife

Yes, but they are hard to find. Many lodges start out as bank burrows on a stream and then the sticks are placed on top of the vent holes on the bank. Then once the lodge is well under way they dam the stream and voila a lodge seems to have been built in the middle of a beaver pond.

When we raised 4 babies in our farm pond they built a bank burrow without me knowing since the entrance was under water. I noticed a pile of sticks on the shore and I moved them to a nicer location. The next day they had moved them back to the original location and that is how I found the vent hole. It is not very big at the surface and hard to find.

Mike Callahan: Beaver Solutions

Often the lodges are dug out under the root canopy of a bush or small tree which prevents the roof of the den from collapsing as well as allowing ventilation to occur. On rare occasions I’ll see sticks laid on the ground above the burrow as a “roof”. However, sometimes the ground seems thick where there does not seem to be a root system or roof of sticks for ventilation. On those occasions I am baffled as to how fresh air gets in.

Sherri Tippie: Wildlife 2000

Well, I’m sure they do because they’ve been doing it like that for a long time. I have seen however, I don’t know exactly how to explain it . . . . places behind the opening to a den where there are openings with sticks laced together – like an air hole. And, I’ve seen bank dens with nothing of the sort. The thing I’ve realized about beaver is, they really are all different. Some beaver do things one way,others do it differently. It really gets interesting when it comes to scent mounds. I have a slide of a scent mound that is so interesting!! I didn’t know what it was until I climbed down the bank and smelled it! It was a purple area in the sand, and it looked like a human had taken their four fingers and made a ran it criss crossed them. There were NO sticks! Just this purple place in the sand. But I would know that smell anywhere! It was really neat.

Joe Cannon: The Lands Council

Hmm. .. good question. I’ve been assuming that they don’t raise the kits in the type of bank lodge without the branch cover/ reinforcement on top (and venting). So you’re only seeing the bank holes with the Martinez beavers? I’m curious about this also.

Bob Arnebeck

Whenever I’ve explored abandoned bank lodges the extensive burrows in the bank have exhausted me — or I should say my kid, I used to push him into them with a flashlight. I’ve never pried in the winter looking for vent holes but the coyotes seem to have no trouble finding a place to dig in and I assume got a scent. In some cases the beavers seemed to be paying attention because they covered any holes that were dug. Of course in high water the entrance to burrows might be below the water but my impression is that the burrows are generally dug with part of the burrow entrance being open to the air which is why the beavers then pile on logs to hide the entrance. That said, I have seen beavers torpedo out of burrows entrances completely below the water, but that was in pretty porous bank of loose soil with several burrows with some completely open to the air. I think beavers are probably more comfortable in burrows than in lodges, at least my kid seemed to be.

Leonard Houston: Beaver Advocacy Committee

If the beavers are living in there then there is ventilation this is how the lodge or den is dried and vent holes often double as plunge holes allowing beavers to escape predators without making it back to the water

I have attached two photos one is a vent hole into a bank den as you can see it is to small for the animals to enter, the second is inside the bank den photoed by sticking the camera down the vent…….. there was two underwater entrances and a plunge hole and tunnel some 15 ft from the waters edge…..no kits were present at this site but we did have a breeding pair living here

It appears that the consensus of the experts is that bank lodges DO have vents to let in fresh air. So think of that the next time you’re watching the creek for movements!


Thursday evening a  mysteriously heavy package from Sherri Tippie arrived in the mail. When I opened it up I found this

102 clay beavers, mothers and kits, and yearlings and an array of beaver chews which are made  from actual beaver-stripped branches in Sherri’s garden. These handmade treasures were for our festival, lovingly wrapped in patchouli scented tissue paper. Sometimes remarkable things have to be processed in smaller doses, so here’s a closeup of the ‘brown family’.

Aren’t these gorgeous? We’ll be finding some very adorable ways to feature these at the beaver festival, but we should all take a moment to realize what a remarkably generous and time consuming gift this is. I first learned about these little beavers in an article years ago, and was dazzled to meet them (and their gifted artist) in person at the conference last year. I loved each one of them AND her and sat through her entire lecture with tears streaming down my face because it made me so happy to hear her in person. Later that night at the banquet dinner I was lucky enough to sit beside her and after endlessly plying her with questions, describing mysterious beaver behavior for her to clarify, and burdening her with heartfelt stardom, I shamelessly begged for her to give some of those beavers for the festival. She was reluctant, they take time to make and she had an Audubon show coming up, but in the end, she made sure I left with 25 that night.

The amazing part? I didn’t even beg for these.

If you haven’t done so already, show your support by picking up a copy of Sherri’s excellent book and subscribing to her newsletter.  Here’s her interview this winter on Agents of Change if you need a colorful reminder. And now this likely candidate for more festival-directed begging was sent by longtime supporter GTK. Wouldn’t they be an excellent sponsor?


Beavers gnawing along Tenmile Creek

By Janice Kurbjun Summit Daily News

When you stumble across a mountain pond, a thicket of willows or high alpine meadows, you’re typically looking at the work of a beaver. They’re critical for the green wetland areas we call riparian. Without them, the ecosystem can and did change dramatically. 

Today, it’s a landscape of fast-flowing streams and invitingly open banks.

What it used to be before beavers were trapped to extremely low populations was a landscape of stopped-up water that brought life to arid mountain valleys. Evidence of that landscape on a small scale can be seen up the Swan River Valley, as Tiger Road turns into the dirt roads following the forks of the river. There, the stream slows to a trickle, evidencing an active beaver population. The valley is flooded with water, creating a green expanse between the rocky cliffs that surround.

Now that’s what I call a delightful beaver read! Janice discusses beaver controversy but makes it clear that beaver benefits are worth the challenge. No surprise. The article is from Colorado where they have personally had the benefit of the very most dynamic beaver teacher for decades. I just found this on Youtube from the recent Aspen Natualist Nights “Beaver: Nuisance or Opportunity?”. It may be longer than you have time for this morning, but I promise you it’s very, very worth it. There are lovely discussions of her work with Skip and the comments at the end about the injured beaver she rehabbed are among the most beautiful words I have ever heard.

On to more beaver goodness. This is a joyous beaver day! And lets just pause to say I got an email this morning from the city council of Yellow Knife thanking me for my email about how to protect trees. I’m hopeful that the information will help.

Beavers helping reshape Clinton nature sanctuary

By AMY NEFF ROTH Observer-Dispatch

“Studying a single colony for a prolonged length of time, and gauging their effect on a specific habitat has been and continues to be a fascinating endeavor,” Perry said. “Also, year to year, they continue to surprise me with some aspect of their behavior that I haven’t seen before.”

Their impact on the nature sanctuary is impossible to miss. They’ve turned two creeks into nine ponds, building at least 16 dams of varying sizes and three lodges.

The new wetlands – and resulting dead trees with nesting cavities – have drawn a variety of animals to the sanctuary, including wood ducks, hooded mergansers, herons, kingfishers, flycatchers, woodpeckers, turtles, trout and dragonflies.

As one woman who has also watched a single beaver colony impact a creek for 5 years, I can’t tell you how firmly I agree! This is a great article and a very delightful read. Spring Hill Farm Cares is a good friend of Beavers: Wetlands and Wildlife and has learned first hand from an excellent pair of teachers. They produce films for BWW and work hard to teach about their value in the ecosystem.

Perry knows that his days with the beavers are numbered. He’s surprised they’ve stayed this long and he knows they’ll leave once their food supply disappears. Looking at the poplars and pussy willows on the property, he gives them another couple years, he said.

Once the beavers go, their dams will start to leak. The ponds will dry up, creating silt-rich meadows. But as the trees grow back, more beavers will probably come.

Until then, Perry will study other colonies, but he’ll miss these beavers.  “Definitely, when they leave, our nature preserve will be a bit like a house after the children have grown up and moved away,” he said. “We will miss them and also the ponds that they so faithfully maintained.”

We are NOT going to talk about that (she sniffed crisply), but go enjoy the great read anyway and I’m thinking Matt might need a little wine tasting vacation in the Napa Valley around the first of August? What a great beaver end to memorial day weekend!


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