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

Category: Beavers and Birds


What do you know? While I’ve been cocooned in a bubble of festival details the world has continued to turn and find it’s own truths to say  about beavers! Whether it’s the IFLS article that notices that beaver kits are, in fact, the cutest rodents in the world or this fine article from Binngham county Idaho.

CONNELLY: The beaver pond: Nature’s landscape remodeling program

Nature likes to remodel. Hurricanes, floods, fire, and so on can change the environmental landscape quickly and over large areas.

Nature uses another tool to affect change in relatively small areas, the beaver pond. Beavers are a “keystone” species, meaning their wetland-creating activities support many other species. In lakes and rivers with deep water, beavers may use bank burrows and lodges, otherwise beavers build dams to provide ponds as protection against predators and access to food during winter. Beavers normally work at night and are prolific builders, carrying mud and stones with their fore-paws and wood between their teeth.

Cute idea. The beaver pond “Remodeling program” could be reality TV that catches on. I like where this is going.

Beaver ponds can provide nurseries for trout and salmon. They are also beneficial to frog and toad populations, likely because they provide areas for larvae to mature in warmer, well-oxygenated water. A study in Alberta, Canada, showed that beaver ponds supported almost six times more newly metamorphosed wood frogs, 29 times more western toads and 24 times more boreal chorus frogs than on nearby free-flowing streams.

Beaver dams also help songbird populations by stimulating the growth of plant species important to songbirds and generally enhancing habitat. The presence of beaver dams has been shown to be associated with an increased diversity of songbirds.

Beaver ponds help build and restore wetlands which improve downstream flood control, plant and animal biodiversity, water quality, and erosion control. A recent study of beaver pond hydrology reported increased groundwater storage and regional water balance which can certainly be beneficial during drought.

Wow that’s a lot of good things to say about beavers in IDAHO. Have you checked your state laws? Are you sure that’s legal? I couldn’t not be happier with this article.

Many ranchers value beaver ponds because they enhance water and forage for livestock. After restoring beaver, one Idaho rancher reported that his ranch and surrounding public lands experienced an increase in wet meadows, healthy riparian habitat, and floodplains that are more resilient to fire, drought, and erosion. Lew Pence, who worked for the U.S. Natural Resources Conservation Service, said “I think beavers, in conjunction with proper grazing management, are the most economical way to bring these badly eroded riparian areas back to health”.

Additionally, a recent study concluded that increased vegetation productivity resulting from conservation-oriented grazing or exclosures and high amounts of beaver activity is equivalent to moving conventionally-grazed, low-gradient sites without beaver up at least 850 feet in elevation or increasing annual precipitation by almost 10 inches.

Wow. Jay Inslee you have made such an impression in Idaho that it’s starting to sink in. I am fully impressed. You should be very proud. Get ready for the classic “your mileage may vary” statement to make cover the lawsuits that follow.

Beaver ponds may not always be a good thing and do present some challenges. Ponds can be disruptive; flooding may cause property damage and can wash out railroad tracks and roads. When a beaver dam bursts the resulting flash flood may overwhelm a culvert.

In his book “Journal of a Trapper,” Osborne Russell reported much of his beaver trapping occurred east of the Snake River Plain. That was prime beaver country in the 1830s, and many areas still provide good beaver habitat today. If you want to view beaver ponds, the higher country stretching from Mink Creek to the South Fork of the Snake offers plenty of opportunity.

Okay nothing about solving problems or flow device but STILL. That was the best paragraphs I have read about beavers from Idaho EVER. I think that deserves a celebration. I don’t even know who wrote it. The article is titled  “Connelly” but it doesn’t even say anything about the author. I did find this bio however. He’s the real deal.

Jack Connelly has lived in Bingham County for over 40 years. He is an avid outdoorsman and has hiked, camped, hunted, and fished over much of the U.S. as well as parts of Europe and Asia. Connelly worked as a biologist for the Idaho Department of Fish and Game for over 30 years. He now enjoys retirement with his wife Cheryl raising chickens and bird dogs at their home in Blackfoot.

Alright Idaho. You’ve been officially summoned to the beaver table. I can’t wait to see what happens  next.


Yesterday was a banner day for beavers with the publication of Elizabeth Winstead’s fantastic article in the Golden gate Audubon Blog. You know her because of her fantastic photo of the fairfield beaver lodge that sometimes adorns this website. Does this look familiar?


Like many fantastic beaver photographers she started hanging around beaver ponds because she was interested in birds. So her article is the perfect outgrowth of this. I knew this was coming and helped brainstorm and edit the article but she outdid herself with the final product. Enjoy,

The Birds and The Beavers

I may not be the best birder since I’m not much of a morning person, but recently I woke up at an ungodly hour to drive to Fairfield for the dawn. I thought, “Who is this person who really doesn’t like to be cold, but is so captivated that she forgets she is shivering, and her hands are numb on a wind tunnel of a bridge despite a hat, gloves, and multiple layers, because she is waiting for, of all things, a baby rodent to appear?”

The dawn slowly lit up the small creek below as I searched the water because I heard there was a beaver kit, and I’m a pushover for baby animals. Suddenly, a Green Heron erupted out of the marshy edges and flew across the creek and over a nearby house. Green Herons have declined by 68% (from 1966 to 2014) and can be elusive to find as they hide in vegetation. Who would’ve thought that you could find a family of beavers in the middle of a city on a human-channeled creek surrounded by houses on both sides, and that the beavers would be able to create enough habitat to attract waterbirds like Green Herons? Happily, I got to watch both an adult beaver and a kit swim in the creek. The kit seemed annoyed by a nearby mama Mallard and her five ducklings and slapped the water with a cute tiny whack.

My goodness who WOULDN’T wake up early to watch beavers??? Is that rhetorical? Especially beaver KITS. So many Junes we were up at dawn and out after dark trying to see ever last moment of our new generation in the creek. Elizabeth you have all our solidarity!

A love of nature led to a love of birding, which led me to notice a reference to the California Beaver Summit in a Golden Gate Audubon email last year. Worrying about climate change, I was intrigued by their hook—what if one of the solutions to problems like drought and wildfires was simple, affordable, and nature-based? What if it involved an unlikely, plump rodent with buck teeth and a flat tail?

Before the California Beaver Summit, I had never seen a wild beaver, so I got excited when they told me there were some in Fairfield and on the Napa River. The Fairfield beavers had a Facebook group with a map, making it easy to find them. I visited these crepuscular critters five times in the last year, both at dusk and dawn. Like any curious birder, I looked to see what birds would be found along their urban creeks. So far, I’ve seen a total of 32 different species representing 21 different bird families with at least 455 individual birds counted on an approximately one-mile section of Laurel Creek.

I am very powerful. I wrote the copy for GGaudubon that invited folks to the summit. And I announced at the summit that there were beavers in Fairfield shocking the panelists. But apparently I’m not so powerful that I can stop very smart people from claiming that beavers are CREPUSCULAR.

Obviously an animal that round with that much to do and that  unnutritious of a diet needs to be awake more than 2 hours a day to get the job done. SHEESH

USFS Wildlife Biologist Karen Pope talked at the California Beaver Summit about how beaver dams doubled the probability of willow flycatchers and doubled the density of song sparrows compared to areas without beavers. So, I wanted to learn how else beavers might benefit birds.

Beavers affect biodiversity because their activity slows water, stops soil loss, creates pools and canals, and is associated with increased plants and beetles. Beavers transform stream habitats from narrow strips of vegetation to wide dense wetlands with lots of plants. Their dams and burrows can create microhabitats for amphibians like red-legged frogs and northwestern salamanders. Muskrats, water voles, minks, and otters benefit from the abundant prey and den sites in beaver ponds. Some restoration projects for endangered salmon and trout have built structures called beaver dam analogs (BDAs) which slow streams and imitate beaver ponds with slow cold pools for the baby fish, resulting in huge increases in juvenile fish and survival rates.

I actually didn’t realize Elizabeth came to fairfield because of the California Beaver Summit. It really makes me feel a little dizzy to think of making something happen that inspires people enough to inspire other people to keep inspiring more people.

Riparian habitats provide for birds’ basic needs: water, food, shelter, and nesting sites. “Over 135 species of birds native to California use riparian forest habitat.” The insects supported by native riparian trees and shrubs are vital food for birds like the least Bell’s Vireo (Vireo bellii pusillus) and Yellow-billed Cuckoo (Coccyzus americanus), both riparian birds in decline.

A review of the impact of beavers in their wetland habitat noted that insects abound near beaver ponds, providing food for songbirds. Shallow water along pond edges contains plant particles, seeds, and invertebrates for ducks. Swans and geese have built nests on the tops of beaver dams and lodges, for protection against predators. As beaver dams flood an area, drowned trees attract woodpeckers and other cavity-nesting birds. The dead trees and snags are also used by raptors.

The diversity of bird species near a beaver pond has been found to be 50% to three times greater than that near an unmodified waterway. A study in Wyoming and one in the Adirondack Forest in New York found more bird species at beaver sites due to wider riparian zones and tree diversity. Another study in Wyoming found 75% more waterfowl on streams with beavers than those without.

Streams with beavers are associated with willow, vital for the federally endangered southwestern Willow Flycatcher (Empidonax traillii extimus).  The Sierra population of Willow Flycatchers occurs in small numbers and within less than 100 meadows in the Sierra Nevada and Southern Cascades. More Willow Flycatcher habitat could be restored by encouraging beavers and their activities.

Go beavers Go! If I wanted a whole bunch of birds in my stream I’d want a family of beavers to move in right away.

But there’s more than just the wetlands. Cornell Lab of Ornithology’s 2019 study noted that of the almost 3 billion birds lost in the last 50 years, the grasslands areas posted the biggest losses, with over 700 million individuals lost across 31 species since 1970 (a more than 50 percent decline). A study on the conservation of grassland birds in North America said: “… elimination of beavers resulted in the loss of floodplain meadows that supported grassland birds…The systematic destruction of keystone species such as beavers and prairie-dogs is one of the greatest and least-appreciated reasons for the loss of biological diversity in grassland systems.” Also, when beaver ponds are abandoned and taken over by grassy areas and shrubs, resulting in the creation of beaver meadows, these areas had the highest levels of bird biodiversity when compared to other adjacent riparian areas.

Another interesting discussion in Ben Goldfarb’s compelling book, “Eager: The Surprising Secret Life of Beavers and Why They Matter” and this webinar is how the declining Greater Sage-Grouse would benefit from beaver-created wetlands in their increasingly fragmented arid sagebrush habitat.

On undammed streams, storms and floods propel water racing down a single thread channel, causing erosion. The streams can become more and more incised, and much water is lost to the ocean. Since the large peak flow is in the spring after the snowmelt, there isn’t much water left in the streams for nearby plants in the summer.

But things are different on a stream with the North American beaver (Castor canadensis). These rotund rodents are clumsy on land but are agile swimmers with webbed back feet. Nature’s engineers build dams and lodges made out of sticks, logs, and mud to create a big watery pool where they can be safe from predators. They build canals into the sides of streams to reach more trees via water. Their iron-strengthened orange teeth never stop growing, so they can cut down more trees. When floodwaters race downstream, their dams slow water, spread it out, and store it into the soil so it takes more time to release. During the summer drought, there is enough water stored in the soil and water table to keep plants green. The beaver-dammed stream has flattened the bell curve of streamflow and releases the water much slower and later in the year, so it’s available during the summer.

Beaver activity increases the riparian areas around streams and their plants thrive and don’t dry up in the summer, so they don’t become fuel for wildfires. Beavers create wetlands that become fire breaks and refugia during wildfires, protecting plants and other animals.  Beaver dam areas have three times more protection from wildfires than areas without beavers.

The California Native Plant Society reports only 5 to 10 percent of California’s riparian habitat remains today. What would happen if we encouraged beavers to repair and restore some of that habitat?

I am dreaming of millions of SF birders waking up early to drive to fairfield and photograph beaver dams. I am dreaming of every audubon chapter in California having a “Beaver” focus team to scout all the beaver dams in the area to make sure everyone visits them because they matter so much to birds. It could happen.

 

The story of the Fairfield beavers on Laurel Creek involves the city of Fairfield, which can get a permit to kill beavers, and has removed their dams in the past due to their worries about flooding. Yet other solutions exist, like beaver flow devices and cost-effective pond levelers.  Meanwhile, the city of Napa recently celebrated these peaceful vegetarians’ biodiversity effects with interpretative signs.

Currently, the California Department of Fish and Wildlife allows property owners who consider beaver as pests or nuisance to remove their dams and kill them. However, Governor Gavin Newsom just proposed a new “Beaver Restoration” program to be run by CDFW, which would promote their restoration and conservation.  This budget proposal, which needs to be approved by the Legislature states: “It might be odd, but beavers are an untapped, creative climate solving hero that helps prevent the loss of biodiversity facing California. In the intermountain West, wetlands, though they are present on just 2 percent of total land area, support 80 percent of biodiversity.”

What if like our bodies’ miraculous ability to heal, we can trust nature’s ability to heal and repair the land? As someone who doesn’t want to choke on the inevitable wildfire smoke coming our way, what if we trusted in nature’s engineers to help restore streams and build resilient habitats?

When threatened, beavers use their big, flat tails to slap the water with a loud startling whack. What if instead of seeing beavers as pests, we heed their “whack-up” call? Beavers, birds, and our lungs will thank us.

And the money shot? Thanks especially for this Elizabeth.

Want to learn more about how beavers matter to birds and other wildlife and how cities can live alongside them? Attend the 13th annual Beaver Festival sponsored by Worth a Dam, on Saturday, June 25, 2022, at Susana Park in Martinez, from 11 am – 4 pm.

An excellent article with a link to the beaver festival in a major        publication at just the right time. Thank you VERY much!

 

 

 

 

 


Mt Diablo Audubon has been a good friend to the Martinez Beavers since the very beginning of the battle to keep them. They were only too willing to share some newsletter space with beavers too. Their May issue was just posted.

The new quail is online, not mailed to members, so they were more generous with space allotted for beavers and I made sure to take full advantage of their generosity.


Doesn’t that sound delightful? You better mark it on your calendar RIGHT NOW!!!


Well despite the stupid senator, they are getting smarter about beavers.

West Virginia (kinda) Enlists Beavers To Help Ducks

Natural methods used to improve wetlands.

Despite rugged mountains dominating most of its landscape, West Virginia hosts a small but diverse number of waterfowl during migration and breeding seasons. Keeping the states scarce wetlands intact and healthy is crucial for these ducks.

Ducks Unlimited in 2021 helped the West Virginia Division of Natural Resources fund new restoration projects on a portion of Pleasant Creek Wildlife Management Area. The 3,000-acre complex is in the northern part of West Virginia, about 80 miles south of Pittsburgh. (more…)


More blue herons. I vote for more blue herons. And the thing that helps them of course.

Great blue herons have made a big comeback, thanks in part to beavers

Not that long ago, great blue herons were a rare sight in the Northeast due to hunting pressure and pollution, said Mass Audubon, but they’ve made an impressive comeback in the past few decades. In addition to legal protection of herons and the wetlands they utilize, another factor has helped boost the numbers of great blue herons in Massachusetts and elsewhere in New England: beavers.

“Great blue herons are the beneficiaries of beaver activity,” said Petersen. “Beavers have rebounded because they’re protected, and beavers create habitat that other wildlife uses.” (more…)

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