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

Month: August 2013


Okay. Call your cat over. We need her for this column. Make it sound interesting and click your tongue a few times. Is she there? Great, now once she’s in petting distance reach out to stroke her – not that way – pet from the base of her tail all the way up to the top of her head. If you do it right she should look like a hair-volume product commercial.

Perfect. Now you know just how I feel about this article from Colorado. It’s not horrible or malicious. And it’s certainly not the worst thing I’ve ever read about beavers. But it’s jaunty tone and timbre, from the first word to the last sentence, definitely rub me the wrong way.

Those dam allergies

Our discussion today will focus on Ginger Beaver and Duncan Beaver, the pair of sharp-toothed, gnawing rodents that live at our Cheyenne Mountain Zoo. (Yes, we’re back at the zoo again, where my wife is a member of the board of directors. But unlike in last week’s column, we’ll be talking here about creatures that have evolved over time.)

 Anyway, these are no ordinary beavers. Their story is quite remarkable.  Both beavers are allergic to trees. I am not kidding.

And so it begins. Already I’m asking, perhaps Ginger and Duncan are allergic to ZOOs, did you ever consider that?

Ginger is a 4-year-old, and her partner Duncan is 5. They have, however, been spayed and neutered and are partners only on the surface.

 To tell us the story of these special animals we bring in staff veterinarian Dr. Eric Klaphake, a lucky guy who gets to spend a few hours each day cavorting with beavers. The problem began in April, the veterinarian says, with each beaver scratching at its underbelly fur with front and back paws and even with their teeth.

 “Then Duncan developed breathing problems,” Klaphake says. “Rodents only breathe through their noses, never through their mouths. So for a beaver, a stuffy nose is a much bigger issue than it is for other animals. Eventually, Duncan even began sneezing and wheezing.”

 And I think I speak for all zoo visitors when I say this: No one wants to see a sneezing or wheezing beaver.

 It got worse: “They began to lose hair on their bellies,” Klaphake says. “They were uncomfortable and irritable. Beavers are nocturnal, normally only active at night, but they began wandering around all day, not sleeping.”

Ugh. Miserable trapped beavers unable to get comfortable, roaming a noisy zoo all day.

Soon, the zoo had some exhausted beavers. Something had to be done. Testing ruled out hormone imbalance, infection and hyperthyroid issues. Then a skin test hinted at allergies. A veterinary allergist made it definitive.

 “Ginger has wood allergies. She is allergic to several trees including birch, alder, black walnut and hackberry,” Klaphake says. “Duncan is allergic to cottonwood, alder and elm. He’s also allergic to ragweed and mold. Ginger is allergic to grasses, goldenrod and firebush.”

Good lord, I hate this story. Allergic to the thing they eat, and work with and live in? This is a second “Silent Spring” and deserves a grim dirge, not a peppy paragraph! A beaver allergic to cottonwood is one unhappy beaver. I suppose if he was in the wild he could just walk past the tree that itched and gnaw on something else instead. But since he’s in prison he has to eat what he’s fed, or not eat at all. We won’t even mention why they’re being exposed to MOLD in a zoo that’s supposed to be maintained. And what’s up with allergy tests? Have you ever known anyone who went for an allergy test or brought their pet for one that came back with GOOD news?

Me neither.

Anyway, the initial solution was, just like with humans and even some dogs and cats, regular anti-allergy injections. Here once again is Klaphake:

 “The challenge with beavers is that they can be pretty unfun to be around when they are irritable,” he says, although most of us probably already knew that. “They are among the largest of the rodents — Ginger weighs 60 pounds and Duncan is about 50 pounds — and they have those big front teeth, and when you make them unhappy they come at you pretty quickly.”

I’m sure you don’t want those beaver to “go Bellarus” on you. No wonder you sound worried. Hey, I have a solution. Neither beaver is allergic to willow. So why not stop feeding whatever happens to be on your way to work and just give them what they can tolerate! Then take down any cottonwood or Alder that is upwind or nearby in the zoo, okay? Or you know, you could keep injecting them pointlessly and see if they get better.

Eventually they stopped giving them injections and adapted oral measures instead, like sneaking medicine into a sweet potato. Which happened to work a lot better.

They’ve stopped scratching, their belly hair has grown back, and they are back to their nocturnal lifestyle.

Since those beavers were 4 and 5 before your noticed this problem, I wonder if something might have triggered their reaction? A new cleaning compound you’re using? Or the zookeepers new perfume? I wonder if having surgery might have kick-started those allergies? Maybe the chemical you used to put them to sleep for the operation? Or the pellets you fed them when they were healing? Come to think of it, maybe it’s windborn exposure to the gallons of roundup they use at the three adjacent golf courses nearby?

Hate. Beavers. In. Zoos.

beavers playing poker

 

 


179 W. Broadway, to be precise. That’s the address of Fur-bearer Defenders in BC where our good friend Adrian Nelson is putting in flow devices faster than they used to kill beavers. (And that’s pretty fast.) Just read this great story from yesterday

Cavalry1

Don’t believe me? Check out this fantastic article:

Volunteer help saves beavers and highway

Beaver dams threatened to flood a section of Highway 101 in Egmont, but thanks to two days of volunteer efforts, the road is now safe — and the beavers are, too.

“The resident in Egmont with the acreage really liked the beavers being there. The habitat they created was bringing in elk, which he really loved, and even when we were there we saw gorgeous song birds,” Fox said. “So he didn’t want to harm the beavers, but it was a little too close for comfort. The dam was built near the roadway.” 

Members of the Furbearer Defenders group Lesley Fox, Jim Atkinson and Adrian Nelson and Friends of Animals member Dave Shishkoff travelled to Egmont on July 31 and Aug. 7 to install two pond levellers and some exclusion fencing to appease the beavers and protect the roadway.

Hurray for Adrian and FBD! And our new friend Dave Shishkoff all of whom drove three hours both ways two times to pull this off! I’m thinking they have earned some beaver love for their hard work so go donate what you can and remind people that beavers are a good thing to take care of.

Cheryl sent an army of excellent photos from her visit to the beavers on Saturday. If I had any impulse control at all I’d eek them out by sharing one a day. But you’re in luck, because it’s always Christmas morning around here. There was lovely fresh willow to keep them occupied and a cast of characters made their appearance.

Wait up!
Kit chases adult with Willow – Photo by Cheryl Reynolds

Did you see that little straggler behind? Looks like he is working hard to catch up!

wait for me
Kit catches up to Willow – Photo by Cheryl Reynolds

Wait for me! I was especially happy to see this familiar face – although given the current state of our dams I know he’s around and feeling fine! You’ve heard of bad hair days right? Well, our patriarch has what I’m going to call “DAD HAIR DAYS”.

Dadhairday
Father Beaver’s unique do! Photo Cheryl Reynolds

Ha! Great to see Dad in all his glory! He must have VERY powerful Castoreum! There were various close encounters of the beaver kind:

closeup
Beaver Nose & Whiskers Photo Cheryl Reynolds

And finally  something that looks uncannily like a beaver kit waiving!

beaver says hi
Beaver Kit Waiving – Photo Cheryl Reynolds

Which was so adorable I had to go marching back through the archives to show that, yes, Martinez has the most friendly beavers on the entire planet. Thanks so much Cheryl for this closeup meet the beavers! Am I wrong or shouldn’t this be the new billboard as you come off the Benicia bridge?

friendly beavers1


Eleanor Grosch Dalkner is an amazing artist who has done work for the likes of microsoft and Urban Outfitters. In her spare time she does some work for non-profits and charity’s which is how she got interested in the story of Sherri Tippie and her beaver  quest. Read the fine print where she references the excellent 2011 article about Sherry in the Denver Westword.

Capture

 Isn’t it beautiful? Go check out her entire amazing portfolio, which is a natural wonder. Sherri is certainly inspiring. She inspires me almost every day. As I’ve said before, I sat in her presentation at the first beaver conference I attended just weeping because I was so grateful she was in the world. She called the other day to ask how the festival went and say how much she’d love to attend one day. I promised her a seat of honor if the day ever comes. Sherri is very inspiring.

But maybe 6 years of beaver festivals might inspire Eleanor too? Just sayin’.

There is an awful fire raging in Idaho’s Beaver Creek so at the moment every “beaver alert” I’m getting is about evacuations or helicopters. That means I have no amazing articles for you this morning, but I was able to find a few photos you might enjoy. Let’s start with this ‘moss on a log’ beaver from the children’s national geographic contest.

51eaa39405a96Beaver_at_Botanical_Gardens_large_medium

Peaceful, huh? I’m thinking we need a few choice topiaries in beaver park! Next is a painting from Maine that should really be on my wall….but shh…head is a little more “fox” than “beaver”.

beaver dream

This is by Janice Kaspar of Maine. Love the bed of beaver dreams he’s sleeping on. Reminded me of this lodge for humans I found in Connecticut. The Winvian has very unique cottages in the woods. This cottage is called the “beaver lodge”.

winvian-beaver-lodge

At 1250.00 a night its a little pricey for my wallet but still enchanting. There’s an actual beaver pond near the cottage of course. for hard core beaver fans like myself that must be a draw. Of course I’d probably stay in this too:

Beaver Lodge

Come to think of it, I think I DID stay in that. When I was a child I wheedled my brother into making a fort almost exactly like that on my parents property. It was dug about a foot down in the earth and had branch walls and pine needle ceilings. The shadows inside were amazing.

Itchy though.


Barbara D. & her husband are friends of Megan Isadore of the River Otter Ecology Project, and came for the beaver festival. Afterwards she sent me a nice note appreciating the event and describing a gift she would send.

Yesterday, in my ongoing/vain attempts to reduce clutter, I chanced upon an article in Wild Earth for spring 2001 with the title “Abandonment –on Beaver Ecology and Recovery” (excerpted from a 1997 book by Tom Wessels: Reading the Forested Landscape: A Natural Historyof New England). Although about beavers where winter means ( or used to ) a frozen time, I was taken by the tone and specificity, and thought I should ask if you’d like me to copy it for you:

I am sure everyone who becomes aware of your work, tries to find some way to express the gratitude and respect it engenders.

 Thank you so much Barbara, and your feedback and kind words make me think three very distinct things, almost simultaneously.

  1. You and your husband are very gracious people.
  2. Megan has classy friends.
  3. I can think of a few property owners in Martinez who, when they became aware of my work, expressed and continue to express  a different sentiment entirely.

With that out of the way, lets open the present! This is a chapter from Tom Wessels book “Reading the Forest: A Natural History of New England”. Tom is one of the founding voices of Antioch University in New England, where he remains a professor emeritus.”As a terrestrial ecologist I consider myself a generalist with interests in forest, desert, and alpine ecosystems, geomorphology, evolutionary ecology, and the interface between landscape and culture. Although my graduate training was as a research ecologist, my avocation is to teach which I do through my courses at Antioch, my books, and the numerous public workshops I conduct each year.”

Now that you know the source, enjoy.

abandonment

I have uploaded the chapter here Abandonment:  On Beaver Ecology and Recovery and if it whets your appetite, help mollify my transgression of copyright law and go buy the book here. With a few sales and a good word, I might get off with time served.

(And if you think I’ve been watching too much OITNB you’d be right, and I can honestly say you should be too.)

Last night was crowded with visitors at the beaver dam, including the teacher who first spied our new kit last year and some wildlife workers from Hayward we met years ago. Our beavers very kindly did not disappoint, and we happily saw all three kits and Jr from last year milling about the dam. It was nice to show folks how tidal everything was, because when we arrived the dam was starkly outlined, towering above the water, and by the time we left it looked like a submarine.

At one point all three kits were out at the same time but sadly outside of the camera frame width. After they left we looked at each other anxiously and thought, “Did one seem bigger than the other two?” and “What does that mean if it didn’t?”

As far as I can figure there are three possibilities….

  1. One was bigger but we just couldn’t see it.
  2. The other two have caught up in size and the difference is no longer as marked
  3. OR we actually have FOUR kits and the bigger one was missing!

If you are never sure about size differences, this might help. The beaver on the dam is Jr who was born last year, and the beaver swimming up is one of our new kits.

They were out by 6:45 and still there when we left. All in all, it was a good beaver night, including the adorable family of raccoons that shuffled through the scrape. Although when I got home I saw Cheryl had shared this on facebook and I realized all my video efforts were for naught. This is from Farasyn Farm Wildlife Rescue and facebook wouldn’t let me embed it here so I downloaded and sneaked it on our youtube account so you could see. Two crimes in one day, but oh so worth it!


RICHARD COCKLE/ Loren Stout, a John Day ex-logger and ex-rancher, inspects a beaver dam along Deer Creek in Grant County. The Oregon Department of Fish and Wildlife opened up at least one beaver dam along this busy tributary of the John Day River System last spring to enable migrating steelhead to pass. Biologists say beaver dams benefit fish, but low water made it impossible for steelhead to get past some dams. Stout claims he freed two 29-inch steelhead that became caught in a dam. (RICHARD COCKLE/THE OREGONIAN)

Beavers, fish and cows: Restless co-existence in Grant County

 JOHN DAY — Here in Grant County, bumper stickers sometimes proclaim, “Beaver Taught Salmon How to Jump,” a light-hearted commentary on the lowly animal’s place in the biological hierarchy.

 But the North American beaver, the world’s third-biggest rodent, is more abundant today in the Beaver State than you might expect. And a thriving beaver population can be too much of a good thing, according to biologists for the Oregon Department of Fish and Wildlife, who partially dismantled a beaver dam southwest of John Day in May to open up Deer Creek to migrating steelhead.

 “We got reports from two or three members of the public that there were steelhead stacked up below this beaver dam,” explained ODFW biologist Jeff Neal of John Day. He blamed a disappointing winter snowpack and undersized springtime flows for making it impossible for threatened steelhead to get past the dam.

Don’t you just hate when steelhead get backed up behind a beaver dam in low flow conditions! Those poor fish! If only there were NO beaver dams and all the streams were dried up entirely! Then those fish could just ride trail bikes up the creek bed in comfort. Good lord this article annoys me. Why on earth do cattle ranchers get interviewed about their unfounded fears about steelhead? And why do those fears get written down as if they had some kind of merit?

But ranchers like Stout and Stangle argue that summertime water in the pools behind dams turns warm under the sun’s heat, which they say can’t be good for steelhead.  “The holy grail of the steelhead is the temperature of the water,” said Stangel, adding that beaver aggravate that problem by gnawing down trees, alder and underbrush that otherwise would provide cooling shade.

Wrong, says Corrarino. Beaver dams force the ponded water down into the soil, where it is cooled. The water then recharges summertime river channels, providing fish with chilly, plentiful water, he said. In winter, rain and snowmelt wash woody debris into beaver ponds where it shelters fish, “so they don’t use all their energy fighting the current and avoiding predators,” says Corrarino.”

Of course not all beavers are busy ruining our fish with their traffic-jamming-dams. Some beavers that don’t build dams are like an entirely new species and have crazy unpredictable habits.

ODFW biologist DeWayne Jackson of Roseburg said many beaver don’t build dams, and thus go unnoticed. Known to biologists as “bank beavers,” they are nocturnal and hide in underground burrows that sometimes extend 50 feet back from a stream, with an underwater entrance, said Jackson.

50 feet back from the stream? Really? To paraphrase Jerry Maguire,  “Show me the DATA”. Funny story, in Martinez folks were certain that beavers tunneled miles from the water and undermined the city, and when Skip dug up the lodge he found one hole the size of a bathtub. Period.

Neal, the state biologist in John Day, would like to see more beaver and more dams in Oregon’s high country. Many intermittent streams in the John Day River Basin that are dry this time of year could have year-around and late-season flows if beaver were present, he said.

 That, Neal said, would benefit ranchers and rural residents.  “Out here, water is everything,” he said.

 Some ranchers aren’t so sanguine. Still convinced beavers harm fish more than they help, the cattlemen worry they’ll be stuck holding the bag.  “There is a lot of fuzzy math when it comes to the government, period,” said Harry Stangel, 68, of Dayville. “Cows are always gonna be blamed.”

And this, ladies and gentlemen, is what it looks like when when information is knocking at the door and STUPID is still holding it tightly shut from the inside. I suppose it’s nice to see this argument taking place in Oregon where there are at least voices of reason in the mix. But honestly, should we even be having this discussion in John Day of all places? Have you ever seen this 2010 report?

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