
By all accounts yesterday was a splendid beaver day, with presenters from around the world really swinging the bat hard for beavers. To the right is Frances Backhouse posing with conference organizers Scott McGill and Mike Callahan (in disguise). Here are some highlights from yesterday Sharon and Owen Brown of Beavers: Wetlands and Wildlifeand were presented with the lifetime achievement award, Skip did a very well received presentation on the history of the beaver deceiver (summarized by Malcolm Kenton) and here’s a brief run through of what I’ll be presenting today.

The only mess-up of the day is that Emily Fairfax didn’t get time to present her awesome fire dissertation – It was a packed schedule and either things started late after lunch or James Wallace couldn’t squeeze her in – but she was hoping to be able to say something about it last night and in her connections with people She was a good sport of course and Lord knows we’ll be hearing from her again soon!
[wonderplugin_video iframe=”https://youtu.be/BqsB0441TdY” lightbox=0 lightboxsize=1 lightboxwidth=960 lightboxheight=540 autoopen=0 autoopendelay=0 autoclose=0 lightboxtitle=”” lightboxgroup=”” lightboxshownavigation=0 showimage=”” lightboxoptions=”” videowidth=600 videoheight=400 keepaspectratio=1 autoplay=0 loop=0 videocss=”position:relative;display:block;background-color:#000;overflow:hidden;max-width:100%;margin:0 auto;” playbutton=”https://www.martinezbeavers.org/wordpress/wp-content/plugins/wonderplugin-video-embed/engine/playvideo-64-64-0.png”]
Check out these great notes by Malcolm on Skip’s Presentation, Worth A Dam’s Emsissary Doug Noble said he stole the show.
Skip Lisle, inventor of the “Beaver Deceiver,” speaking at #BeaverCON2020:
– The Beaver Deceiver is a flow device, but not all flow devices are beaver deceivers!
– We’re like moose — we like wetlands and we know where to turn to make healthy, productive ecosystems. We need to develop a common language & history.
– We’re lucky to live at a time when there are tremendous opportunities to save society a great deal of money with creative long-term remedies and create tremendous habitats.
– There’s a lot of pushback out there because people are used to wetland areas being drained – the culture associates wetlands/swamps with stagnation, disease, “wasted land” and various unpleasantness. So many places inefficiently keep killing beavers in the same places over and over again.
– In my career at the Penobscot Nation, my friend and I kept trying and building junky flow devices until we came up with the successful trapezoidal concept. The trapezoid had to get larger because they’re attached to the dam. Dam-leak separation makes a flow device more robust. Though they’re smart, beavers don’t do much deductive reasoning and can’t grasp the hollowness of a pipe.
– There’s a lot of controversy about where flow devices can work, but I don’t have any problem with zero inches/feet of water. A dry flow device can do a great job protecting beaver habitat upstream. Getting people to stop killing beavers is another issue — there are wide-open trapping seasons in most of these places.
– Every site is different so I need to put in a lot of thought as to what device best suits the place. Some culvert protectors need floors and some don’t.
– We’ve done enormous damage to wetlands after draining them, but beavers can repair all that if we just stop killing them. One beaver in one month (before moving on) brought so many birds to a site I worked on that weren’t there before. It’s miraculous! Remarkable wildlife viewing spots can be created in very short order. Every town can do this.
– I build simple wood structures to guide beavers’ damming — I don’t use the term “beaver dam analog” because it doesn’t need to look like a beaver dam to get them started.
– You can have a long beaver dam parallel to a road and have the water level much higher than the road, with a few pipes through the dam and under the road, and the road stays dry.
– There’s also an aesthetic and spiritual value to keeping beavers on the land — they’re dynamic, fascinating and all different. They bring a lot of joy to our lives.

A packed house with Doug Noble sitting next to Sherry Guzzi of Tahoe!
[wonderplugin_video iframe=”https://youtu.be/zJ-9aQDK77U” lightbox=0 lightboxsize=1 lightboxwidth=960 lightboxheight=540 autoopen=0 autoopendelay=0 autoclose=0 lightboxtitle=”” lightboxgroup=”” lightboxshownavigation=0 showimage=”” lightboxoptions=”” videowidth=600 videoheight=400 keepaspectratio=1 autoplay=0 loop=0 videocss=”position:relative;display:block;background-color:#000;overflow:hidden;max-width:100%;margin:0 auto;” playbutton=”https://www.martinezbeavers.org/wordpress/wp-content/plugins/wonderplugin-video-embed/engine/playvideo-64-64-0.png”]




Beaver are so important and have so many benefits for other species, including many species that are now imperiled, that Defenders works to restore them to places where they will create and enhance habitat for all the other critters we also care about. In the Rocky Mountains, boreal toad and native cutthroat trout are some examples of the imperiled species benefiting from our beaver restoration projects.
It’s not easy being a beaver in some places. In urban areas, such as cities or towns, beavers sometimes cause conflict by building dams which cause unwanted flooding, or by taking down charismatic trees which people value. In many cases these “nuisance” beavers are killed because of their actions, but sometimes simple tools can be used to prevent these conflicts, create more acceptance of their presence by people, and keep beaver where they are. For example, to prevent beaver from felling trees they can be wrapped in fencing or painted with a mix of sand and paint. Beaver, just like us, don’t like the “gritty” feeling of sand when chewing. To minimize flooding, flow-devices can be installed which limit the water level of beaver ponds by using a combination of pipes and fencing.


Canastota, N.Y. — Each year, the Great Swamp Conservancy honors a native animal, and 2019 is the Year of the Beaver (Castor canadensis) because these residents of the GSC are essential to the wetland complex.
This keystone species doesn’t adapt to its surroundings like most; rather, it alters and creates a habitat that aids in their survival and the survival of other species in the area. BWW believes beavers are an important ally in solving the earth’s major environmental problems.
That sure looks like a kit to me. I wrote the reporter in alarm saying I didn’t think that was a disperser who moved in but an orphan who’s parents had been lost or killed. She thanked me for my concerns and assured me that the beaver was older than it appeared in this photo and was building a lodge. Hmm. Maybe I’m crazy.







































