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

Category: Beaver Anatomy


MCCD worker finds prehistoric giant beaver tooth outside Marengo

240zulnw2hamd6sqg7ymqipceey7po2The McHenry County Conservation District maintenance worker was out with a crew not long before Christmas, walking through a field in the nearly 3,000-acre Kishwaukee Corridor near Marengo and looking for concrete foundations of long-gone buildings.

 Parpart’s unexpected discovery sat in the maintenance shop for a few days, everyone taking a stab at guessing what it could be. A tusk – maybe from a mammoth? A Tyrannosaurus rex bone? A cow bone?

Eventually, it made its way to the Illinois State Museum where JJ Saunders, a curator and chairman of the museum’s geology department, identified it as a fossilized giant beaver incisor, a prehistoric beaver that was about 8 feet long from tail to snout.

 The incisor likely came from the right side of the beaver’s lower jaw, Saunders said in a news release.

 “The giant beaver was the largest Pleistocene rodent in North America,” Saunders said. “It was an animal the size of a black bear inhabiting lakes and ponds bordered by swamps. We know from its teeth that the giant beaver did not fell trees, and thus did not construct dams to modify stream courses.”

faceWhat a beautiful find! You can’t help but think that this AP story and the bogus Arizona AP story of the giant beaver got merged in some key folks minds. I’m still getting headlines of GIANT BEAVER found as joggers watched in awe. A beaver the size of a bear is giant. This tusk makes me think of that old beaver family crest from Germany, which we always thought of as more artistic than correct. Now I realize it’s no more wrong than our cartoons of their huge top buck teeth, and given this discovery, actually fairly representative.

Is it just me? Or is this medieval crest beautiful?

crest boar-beaver
Southern Germany 1450


Sometimes I go for days with no beaver news, but we’ve entered the dragnet of beaver stories, where I received round the clock reports of beaver killing in Arkansas, or Arcadia, or Price Edward Island. I guess everyone wants to get their dead beavers in a row before winter, but it’s a little depressing. Here are the highlights of misunderstanding.

Grand Falls-Windsor Newfoundland About 30 beavers are clogging up Corduroy Brook Trail in Grand Falls-Windsor, and several of their dams and lodges have caused flooding.”We want the beavers, beavers are a good attraction, and we want them to stay around. But if we didn’t control the populations, they’d eat themselves out of house and home,” he said.

Naimo British Columbia York said it is unlawful to interfere with traps, but if people do find them they should be reported immediately to conservation officers.  York said there are live beaver traps available, but they are “remarkably ineffective” and when they do work it only means a beaver will end up being relocated into what is likely another beaver’s territory. Beavers are territorial. They are also a hazard to drainage and are not a conservation concern on Vancouver Island. It’s just far more humane to use killing traps than it is to try and live-trap them,” York said.

WINFIELD, Indiana | Beavers continue to create problems in town by felling trees and building extensive dam structures in retention pondsAt the Sept. 24 Storm Water Board meeting, Clayton said licensed beaver trapper Tom Larson could remove the animals at a cost of $200 per beaver.

Jonesboro Arkansas: Rogers says animal control is not equipped to handle the beavers.  The rodents can use their powerful jaws and teeth to chew through the toughest of steel traps.

Is it spring yet? There are more where that came from but that’s all I can stand at the moment. Here’s some lovely “glass half-full” moments to improve your mood.

sonoma kit
Sonoma Wildlife Kit – Photo Cheryl Reynolds

Our own Cheryl Reynolds got to visit the little rescued kit at Sonoma Wildlife yesterday. She held him and fed him strawberries and filmed while he took down the “ramp” in his tank and tried to use it as a floaty device. We Worth A Dam folks are understandably a bit jealous, as you might imagine. I wrote her yesterday and helpfully quoted Luke 12:48.

For unto whomsoever much is given, of him shall be much required.

Just sayin’. Go donate to buy this little fellow  more strawberries, medicine, cottonwood branches and whatever else he needs. We can give this little fellow a new start and we should. And thanks Cheryl, for giving us a ringside seat to his big adventure.


Saved from the brink of extinction: European bison and beaver stage incredible comeback

THREATENED species such as European bison and beaver have staged remarkable comebacks thanks to man’s help, a detailed study revealed yesterday. 

Others to bounce back include the white-tailed eagle, roe deer and grey seal. Birds such as peregrine falcons and red kites have also recovered either after the banning of pesticides or through reintroduction programmes.

Reduced to 1,200 individual beaver in the wild 100 years ago due to overhunting. But legal protection, hunting restrictions, reintroductions, natural recolonisation, and habitat protection and restoration, have helped beavers stage a “remarkable recovery” over the past 40 years.

 They are now established in almost all of its former range, and further increases are likely.

 The report was compiled by the Zoological Society of London, BirdLife International and the European Bird Census Council in collaboration with experts from across Europe.

That’s right. We did such a good job protecting beaver and bison that they are back everywhere that they belong. You know how you’re always seeing bison everywhere you look. And those two beaver in Scotland and the 26 in Spain. In fact they are SO well recovered that we don’t need one dam more. Better start killing them before take over the world and destroy the place.

I dunno about you but these articles make me tense all over as I wait for what comes next. Much like when the US took bald eagles off the endangered list because of the population in Alaska. Or told everyone that wolves weren’t endangered and now could be shot.

If officials could just bring the right statisticians to the table they could probably prove the Panda recovered.

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The beavers surgery yesterday revealed multiple lacerations and slices in which flies had laid eggs. They treated him and he is on his way to healing. I will keep you posted. And if you didn’t donate yesterday you really should.

Now a treat from a friend. Wickipedia Rick’s son made this smart look at the value of nature in Filoli country estate in San Mateo and its surrounding gardens & woods. At 1.15 it features an interview with Rick and a discussion of his thoughts on the role of ecology in human life. Remember Rick is the lead author on the beaver papers, the founder of the Institute for Historical Ecology,  a stalwart beaver defender, an enormous energy burst, and a cancer researcher in his day job. His son has also published a digital guide to the wildlife that you can search here.

Speaking of friends, Malcolm Kenton is the organizer and author from D.C. who maintains the rail website Greater Greater Washington. He is also an avid beaver defender who maintains the facebook page for Beavers: Wetlands and Wildlife and sent us the kit recording from Huntley Meadows. He recently earned a cross country trip and will be stopping in Martinez for a beaver tour Sunday. Unfortunately I can’t be there, but Cheryl will show him around and give him the lay of the land.

In case you need me, this is where I’ll be. (Don’t worry, there’s internet and this view from the hot tub)

vacation


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

 

 


Last night they trapped ‘momma’ beaver with solme netting and cut the restrictive strap off her waist. I just talked to Leslee Hamilton of the Guadalupe River Park Conservancy. She was the ‘lookout’ and there were several others on the team headed by Rebecca Dmytryk of Wildlife Emergency Services in Moss Landing. Rounding out the team were 5 volunteers from Happy Hollow Zoo including one vet tech. Imagine them all, dressed in black, crouching on the bank in silent readiness.

7-16-13 Beaver Rescue-Beaver cornered with boards
Momma beaver netted – Photo Greg Kerekes

Momma beaver came early and very obligingly walked onto the bank in their wall of netting and into just the right position to catch her and  cut the strap free immediately. She was moved to a dog carrier and taken to a San Jose wildlife center for quick check up. Everyone did their jobs so well she was back in the water at the same exact spot by 10:00 that night and then the team went out for drinks to celebrate!  What an excellent bit of beaver rescue and I’m so happy that everyone came together to do the right thing. Channel 5 filmed the whole thing but it isn’t on line yet.

7-16-13 Beaver Rescue-Just cut the plastic strap
Cutting the strap – Photo Greg Kerekes

Congratulations team beaver! If you want to say ‘thank you’ for all their hard work, you can offer a donation to WES here and don’t forget to mention the beavers!

Beaver Rescue! 7-16-2013

Mama Beaver has been Rescued! Thank you to all who helped out: Wildlife Emergency Services from Moss Landing, City of San Jose Park Rangers, Guadalupe River Park Conservancy, Urban Wildlife Research Project, Happy Hallow Zoo Staff, Wildlife Center of Silicon Valley, Worth A Dam Martin.ez, and to family and friends who volunteered. What a great colaboration!!!!! After 9 days of attempting to trap the Beaver, last night we ditched the trapping method and used a series of nets. Once Mama Beaver was on the river bank we pulled up a screen net behind her. Volunteers went in with 3 large hand nets and secured Mama Beaver to the ground. The plastic strap was quickly located and removed, she was then crated and taken to Wildlife Center of Silicon Valley for a check up. The Center examined her and found no wounds so with in the hour she was released back in to the water at Beavertown 🙂 Videos coming soon!  Champagne all around tonight

Which will be perfect, because guess where I’ll be tonight? Safari West has invited me to come up and be there guest and talk beavers to visiting families! Tent cabin and dinner on them with me talking to families after dinner and taking their incredible tour the next day. Jon will be coming with me and Cheryl is being kind enough to watch our own Wild Animal while we’re gone. Of course I had to make a new graphic for the occasion. Safari West has been so generous to us since I found the courage to ask for a donation. If you’ve never been you really should plan a visit, and bring your check book to the silent auction at the beaver festival!

backyard beaver safari

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