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Column: Meet the most dangerous quack in America

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Column: Meet the most dangerous quack in America

It used to be fairly easy to dismiss Florida’s surgeon general, Dr. Joseph A. Ladapo, as a clownish anti-vaccine quack posing a danger mostly to residents of his home state.

That has become harder to do as time goes on, as Ladapo has moved from promoting useless treatments for COVID-19, such as the drugs hydroxychloroquine and ivermectin, to waging an ever-expanding fact-free campaign against the leading COVID vaccines.

This month, Ladapo established a new low for himself. In a public advisory issued Wednesday by the Florida Department of Health, he declared the vaccines “not appropriate for use in human beings” and counseled doctors to steer patients to other treatments. He explicitly called for a “halt in the use of COVID-19 mRNA vaccines.”

Scaring people unnecessarily like this has been hard to watch. … It is hard to believe that Dr. Ladapo actually issued that statement.

— Vaccine authority Paul Offit

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For several reasons, this advisory ranks as the single most dangerous statement by a government health agency since the start of the pandemic, if not for all time.

First and foremost, it’s based on a claim in a paper co-authored by known anti-vaccine activists that was almost instantaneously debunked upon its publication in October.

Then there’s the public health context: As COVID infections have been surging coast to coast, advisories from public health authorities to resume masking and take other protective measures, such as making sure you’re up to date on vaccinations, are almost invisible.

Even more worrisome, the incidence of other vaccine-preventable diseases may be rising. As many as nine cases of measles have been reported in Philadelphia, some associated with an infection started at a daycare center with a family that violated quarantine rules.

Among the victims, according to the Philadelphia Inquirer, are “an infant who was too young to get vaccinated, an unvaccinated older child and the older child’s unvaccinated parent.”

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Nine cases may not sound like a lot — 41 were reported nationwide in 2023 — but they could be a harbinger of worse to come, in clusters in which anti-vaccine propaganda has taken hold.

Finally, one must consider the source. Despite his state post and a tenured position as a professor of medicine at the University of Florida — courtesy of his patron Ron DeSantis, the extremist anti-vaccine Republican governor — Ladapo has zero credibility within the medical establishment. Taking medical advice from Ladapo makes about as much sense as taking investment advice from Sam Bankman-Fried or your view of academic integrity from Christopher Rufo.

Ladapo has become a card-carrying member of the anti-vaccine mafia. Just before Christmas, he appeared on a podcast hosted by anti-vax agitator Del Bigtree, who stirs up his audiences with hysterical rants against vaccines and who was recently appointed communications director for the presidential campaign of notorious anti-vax figure Robert F. Kennedy Jr.

Last January, a faculty committee at the University of Florida medical school found that Ladapo engaged in “careless, irregular and contentious” research practices that may have violated university rules. The committee referred its findings to the university’s research integrity officer, but that officer ruled that since the behavior at issue was performed in Ladapo’s role as surgeon general, not as a UF professor, he had no grounds to take action.

The accusations pertained to Ladapo’s recommendation that males aged 18 to 39 avoid the mRNA vaccines. He claimed that research indicated that for men in that age group, the vaccines presented a heightened risk of cardiac-related death.

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In fact, the research indicated no such thing; rather, it showed that the risk of cardiac death from the vaccines was statistically nonexistent and, in any case, was lower than the risk of cardiac death resulting from catching COVID-19. In fact, Ladapo had personally edited the state-sponsored analysis he cited in his recommendation to remove language in earlier drafts stating that there was “little suggestion of any [cardiac] effect immediately following vaccination.”

The Food and Drug Administration has been pushing back against Ladapo’s fire hose of misinformation and disinformation for the better part of a year. Last March, the agency informed him by letter that “overstating the risks, or emphasizing the risks without acknowledging the overwhelming benefits” of the vaccines — as Ladapo had done in his cardiac death warning — “puts people at risk of death or serious illness that could have been prevented by timely vaccination.”

That brings us to Ladapo’s latest adventure in medical quackery, his claim that no one should take the mRNA vaccines. Let’s take a look.

Ladapo’s advice is based on what he says is research that the Pfizer and Moderna mRNA COVID vaccines contain fragments of DNA that are injected into human cells, which they can contaminate and turn into cancer cells.

In a Dec. 6 letter to the FDA and in the Florida Department of Health advisory, Ladapo raised “concerns regarding nucleic acid contaminants in the approved … vaccines, particularly in the presence of lipid nanoparticle complexes, and Simian Virus 40 (SV40) promoter/enhancer DNA. … The presence of SV40 promoter/enhancer DNA may also pose a unique and heightened risk of DNA integration into human cells.”

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Followers of anti-vaccine propaganda will find familiar features in this statement. For one thing, it sounds science-y as hell, filled to bursting with abstruse terms and jargon. One would have to be an expert in the field to identify it as total balderdash. The statement also bristles with scary references to DNA contamination and cancer and to “billions of fragments [of DNA] per dose.”

The same goes for Ladapo’s hand-wringing in his statements about the FDA’s 2007 standards for DNA in vaccines and his implication that the COVID vaccines violate those standards.

Fortunately, scientific and medical professionals have weighed in. One is Paul Offit, a vaccine expert at Children’s Hospital of Philadelphia. Offit explains that it’s true that “small amounts of fragmented DNA” are injected into the body with the vaccines.

It’s also irrelevant. For those fragments to affect your DNA, he explains, “things would have to occur, all of which are for the most part impossible.”

The human cell has a panoply of mechanisms to destroy foreign DNA. Even if the fragments managed to penetrate the cell nucleus, which can’t happen, they would have to cut up the existing DNA, which would require a mechanism the fragments don’t have.

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“So the chance that DNA could affect your DNA is zero,” Offit said in a video interview with Medpage Today.

As for the Florida statement’s scary references to DNA contamination and cancer and to “billions of fragments [of DNA] per dose,” the vaccines don’t contaminate patients’ DNA, the fragments have no cancer-causing abilities, and that “billions” is, in the context of the vaccines, an incredibly tiny number.

The research paper on which Ladapo based his intimation that the vaccines breach the FDA’s DNA contamination standard is self-refuting. The paper, which was based on an analysis of 24 vials of the mRNA vaccines, actually found that in all cases the fragments were well below the concentration limits set by the FDA.

The FDA, in responding to Ladapo’s Dec. 6 letter, told him that studies of the vaccines showed “no evidence” that the shots damaged recipients’ DNA and that the experience of “hundreds of millions of individuals” who received the vaccines “indicate no evidence indicative of genotoxicity.”

On the other hand, “the challenge we continue to face is the ongoing proliferation of misinformation and disinformation about these vaccines which results in vaccine hesitancy that lowers vaccine uptake,” the FDA lectured Ladapo. “Given the dramatic reduction in the risk of death, hospitalization and serious illness afforded by the vaccines, lower vaccine uptake is contributing to the continued death and serious illness toll of COVID-19.”

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In the words of the veteran pseudoscience debunker David Gorski, disinformation like Ladapo’s output is “not about science. It’s about fear-mongering about vaccines.”

Ladapo’s words and actions have surely contributed to his state’s pathetic performance in getting its citizens vaccinated against COVID. With 11.6% of its population fully vaccinated with a booster as of last May, Florida had a rate among the lowest in the nation. (California’s rate was 20.6%.) Among those 65 and older — purportedly the population that Florida strives to protect — only 31.2% were fully vaccinated. (California: 48.3%.)

Florida’s death rate from COVID of 375 per 100,000 people is among the worst in the country. (California: 283.) You can ignore the defense that the difference is due to Florida’s relatively older population; states with even older median ages have done much better: Vermont (170), New Hampshire (245) and Maine (252). The difference is the indifference of Ladapo and DeSantis to their own residents’ health.

Ladapo’s colleagues in science and medicine face the challenge of understanding what drives someone with Ladapo’s credentials — a Harvard education and a stint on the medical faculty at UCLA — to descend so deeply into professional irresponsibility.

“It is hard to believe that Dr. Ladapo actually issued that statement,” Offit said of Ladapo’s advice to avoid the vaccines. “Scaring people unnecessarily like this has been hard to watch.”

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A Physicist Who Thinks in Poetry from the Cosmic Edge

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A Physicist Who Thinks in Poetry from the Cosmic Edge

Much of the praise for Chanda Prescod-Weinstein’s debut book in 2021, “The Disordered Cosmos: A Journey Into Dark Matter, Spacetime, and Dreams Deferred,” lauded the way she used personal experiences in physics to discuss the social and political inequities that exist alongside scientific breakthroughs.

“It contains the narrative of dreams deferred,” Dr. Prescod-Weinstein, a physicist at the University of New Hampshire, explained in April at a bookstore in Chicago. But its very existence, she said, also “represented a dream deferred, because that was not the dream of what my first book was going to be.”

Her second book reclaims that dream. Released on April 7, “The Edge of Space-Time: Particles, Poetry, and the Cosmic Dream Boogie” is less pain and more play, a homage to the big questions that made Dr. Prescod-Weinstein want to become a physicist in the first place. She begins the book by asserting that it is humanity’s duty to uncover and share the story of our universe. Her latest offering toward that duty is a journey through physics that is tightly bound to her own cultural roots.

In the midst of a multicity book tour, Dr. Prescod-Weinstein spoke with The New York Times about guiding readers through the cosmos from her own point of view and about some of the art, poetry and literature she drew on to shape that journey. This conversation has been edited for brevity and clarity.

Why include so many references to poetry in a book about physics?

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I knew poetry before I knew physics. It was part of my upbringing. I loved A.A. Milne’s “Now We Are Six” and Edward Lear’s “Nonsense Limericks.” Both of my books draw their subtitles from Langston Hughes’s “Montage of a Dream Deferred.”

Adrienne Rich’s poem “The Burning of Paper Instead of Children” became a guiding light for how my work would move in the world. It also opened up for me that I need language. That’s true among physicists. Even an equation is a sentence; even an equation is telling a story.

As physicists, we’re always working in language to connect what we learn with what we know. Poetry is one of the first places that my brain goes to draw those links. Language, as it moves in my brain, is often in Hughes and Rich and Shakespeare. Those are the lines that flicker up for me.

What if we got away from the argument that doing cosmology and particle physics is practical or materially valuable? Then we have to accept that we’re like the poets. What we do is important culturally in the same way poetry is. A piece of this book is me saying there is value in banding with the poets, and fighting for the value of being curious and trying to articulate the world with whatever tools are available to us. Not for the purposes of selling something, but for the purpose of fulfilling our humanity.

Another theme throughout the book is the story of Lewis Carroll’s Alice and her adventures in Wonderland.

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Being a science adviser on future installments in The Legendborn Cycle, a fantasy series written by Tracy Deonn, is one reason Alice is in my book. It has allowed me to be open to the playful side that physics, as a Black queer person, can take from you. I wanted the book to be whimsical, because that’s who I was when I first arrived in physics, and that’s who I want to be when I die.

Part of the call of quantum physics is to change what our sense and sensibility are. When you look at the world through this framework — like the idea that particles have spin but don’t really spin — it sounds like nonsense. Except that’s literally how the universe works. Physics is our “through the looking glass.” It’s real.

Your first chapter invites readers to reflect on the metaphors used to describe the universe, like the “fabric” of space-time or electromagnetic “fields.” Why open in this way?

A lot of books about quantum physics start with its history. I wanted as much as possible not to just do that. I had actually planned to start it with the Stern-Gerlach experiment of 1922. But then I read an essay by the poet Natasha Trethewey about abiding metaphors and started to ask myself what the abiding metaphors of my physics training were.

We don’t ever take time in our classes to ask, “What do we mean when we say ‘space’? What do we mean when we say ‘space-time’?” There are these metaphysical questions that I often told myself were for the philosophers. This book was me letting myself think of them as physics.

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One metaphor you invoke is the “edge” — not only the edge of the universe and of scientists’ understanding, but also existing at the edge of certain identities.

In “Disordered Cosmos,” I talked a lot about being at the margin and looking toward the center. With “The Edge of Space-Time,” I’m choosing to make the margin the center of the story. Part of that was me fully embracing what makes me the physicist I am. I’m an L.A. Dodgers fan. I love “Alice in Wonderland.” I love “Star Trek.” There’s lots of all of that in the book.

Picking a metaphor is a culturally situated decision. I wrote a line that says black holes are the best laid edges in the universe. I did, at some point, think that only some people were going to get this. But for people who don’t understand the reference to Black hairstyles, the sentence is still legible. And for those who do, it will feel like we just had an in-group moment. Anyone who thinks about laying their edges deserves to have an in-group moment in a physics book. Because we are physics, too.

Black students are often told that if you want to be a physicist, then you will make yourself as close to such-and-such mold as possible. At a young age, we have this understanding that whiteness and science are associated with each other, but we are also witnessing in ourselves that this can’t be entirely correct. There’s this narration of, “Well, sure, you can be Black in physics, but that means you have to acclimate to the ‘in physics’ part, and never that physics has to acclimate to the Black part.”

I use the example of rapper Big K.R.I.T.’s song “My Sub Pt. 3 (Big Bang),” in which someone tries to wire up subwoofers in his car but fries the wires because he doesn’t ground them properly. I don’t know if Big K.R.I.T. would think of this as a science story, but I think we should learn to read it as one. Not to contain it in science, but to say it overlaps there. This can be a rap song. It can be about the cultural significance of subwoofers and the Big Bang as a metaphor for the beat. And it can also be about cosmology and about how everybody who wires up cars or does this kind of work is a scientist, too.

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How do you want readers to approach this book?

There is this feeling that you’re supposed to read a book like this and walk away an expert. That’s actually not the point of this book at all. The point is to wander through physics. Even if math terrifies you, you are entitled to spend some time with it.

And so here, I have made you a book with a bunch of tidbits on the oddities of the universe. The universe is stranger and more queer and more wonderful and more full of possibility than whatever limitations you might be experiencing right now. Physics challenges what we are told are social norms. For example, non-trinary neutrinos are fundamental to our standard model of physics.

“Non-trinary,” as in they shift between three different forms.

Non-trinary is natural. It’s such a challenge to the current anti-trans rhetoric that says people can only ever be one thing.

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I don’t need my book to be the most important thing that someone reads. But I want it to be a source of hope. If it reminds you that, as my mom says, the universe is bigger than the bad things that are happening to us, then that’s all you need to remember. I’m good with that.

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Footage shows Central Valley dairy workers kicking young calves, pulling them with pliers

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Footage shows Central Valley dairy workers kicking young calves, pulling them with pliers

In late February, animal rights activists flew a drone over a calf ranch in the Central Valley and watched as workers kicked and punched the animals.

For the record:

7:15 p.m. May 12, 2026This article has been updated to reflect that no calves from Agresti Calf Ranch have ever gone on to be used for Clover Sonoma milk supplies, and the calf ranch opened only in 2025. In additional comments, Clover Sonoma also said in the future, no animals from Agresti Calf Ranch will be part of its supply.

Footage reviewed by The Times shows a worker pulling a calf by the nose with pliers.

It shows two workers removing the budding horns of a calf with a hot iron. While one held the frightened animal’s head, the other — wearing a sweatshirt with an image of the Virgin Mary — applied the iron to a horn. After a puff of smoke, the calf fell to its side, appearing motionless.

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Both male and female calves produce horns. To prevent injury to the animals and their handlers, these are commonly removed. Humane guidelines require anesthesia.

The footage was collected by the group Direct Action Everywhere, known for tactics including releasing beagles from medical breeding facilities and abused calves from farms. It was shot at the Agresti Calf Ranch in Ceres, near Modesto, which is certified by the American Humane Society for its ethical treatment of animals. The workers could not be reached for comment. One was subsequently terminated, the Humane Society said.

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The Agresti Calf Ranch opened in 2025 and is operated by the owners of Double D Dairy, just up the road. Double D Dairy owns more than 10,000 cows across several operations.

The owner of Double D, Dominic Assali, declined to answer questions in person. A phone number for the dairy online is disconnected. In response to an email to his personal account, Assali said, “Animal welfare and safety are incredibly important to us, and we have a zero-tolerance policy for any mistreatment.

“We’ll always take immediate, thorough action to address any operational issues, as we have in this instance,” the email said.

The American Humane Society is a 150-year-old nonprofit focused on animal welfare. Among other things, it certifies animal safety on farms as well as on movie sets. In a statement, it said only 10% of animals raised on farms in the U.S. are certified as humanely treated.

Assali is the grandson of the farm’s founders, Harold and Marlene Agresti. He is a board member of Western United Dairies, the largest dairy trade group in California.

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The mistreatment captured on video has also created a headache for a prominent California sustainable milk brand, Clover Sonoma, based in Sonoma County.

It gets 10% to 15% of its milk from Double D, and Assali and his family are featured on Clover Sonoma’s website. No calves from Agresti Calf Ranch have ever gone on to be used in Clover Sonoma milk supplies, the company said in a statement. It’s unclear whether the abused calves were being raised for beef or dairy.

A Clover Sonoma sign hung outside the main dairy complex on a recent visit.

Clover Sonoma markets its milk, yogurt and cheese products as humanely sourced and environmentally sound. It was the first dairy company to receive a cruelty-free certification from the American Humane Society in 2000. The website also features a “Our Promise” page, which states the company demands “the humane treatment of animals.”

“We were deeply concerned by the reported mistreatment of some cows captured on video at Agresti Calf Ranch during a separate cow operation,” the company said in an email.

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“The rough handling shown at Agresti Calf Ranch is contrary and inconsistent with the humane practices we have fostered for decades and which we demand of all our suppliers.”

Clover Sonoma said it suspended business with Double D as soon as it became aware of the incidents and began “a rigorous audit,” which just ended.

“Clover and the American Humane Society have concluded that the mistreatment was an isolated issue, not systemic or reflective of Agresti Calf Ranch’s personnel. Corrections have been made, including the termination of the employee in the video. As such, we are comfortable reinstating the milk from Double D Dairy.”

After this story published, Clover went further and said a condition of Double D’s reinstatement will be that no animals from Agresti Calf Ranch will be part of Clover’s dairy supply.

A statement from the Humane Society said Clover Sonoma is working with Double D to strengthen its whistleblower policy and training, and has “reiterated its commitment to ongoing independent, third-party audits,” with both announced and unannounced visits.

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Clover Sonoma mainly buys and processes milk from dairies in verdant Sonoma County, as the company’s marketing suggests. Double D Dairy is one of its few suppliers in the Central Valley, which is associated more with industrial-scale agriculture.

On a recent weekday, the calf ranch and dairy farm were visible from a public road. Holstein calves, a popular dairy breed, could be seen in cages through small trees in front of the enclosures. The sound of mooing and a pressure washer could be heard. The smell of manure and dirt wafted in the humid air.

Most dairy companies remove calves from their mothers after birth, raising them separately so they don’t take the mother’s commercially valuable milk. Some dairy farms send calves out to third-party calf ranches for rearing. Others raise them on-site. Female calves are typically raised to become milk cows. Male calves are sent away to become beef or other meat-based products, such as pet food.

A 2025 State Water Board document shows the farm houses an average of 700 calves at any one time, with a maximum 1,400.

The Direct Action Everywhere activists were recently on a public road near Double D’s main farm, flying a drone over the property. Within 30 minutes of their arrival, seven Stanislaus County sheriff’s vehicles arrived and surrounded the activists.

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A heavily armed officer asked to see the drone pilot’s Federal Aviation Administration license, which he provided. After confirming it was valid, a sheriff’s deputy — one of nine at the scene — told the activists they could remain on the road but could not trespass.

Asked about the heavy response, a deputy said there had been several recent violent incidents from animal rights groups at the site, and mentioned the groups had sent in “busloads” of activists.

The Times reached out to the Sheriff’s Office to get more details about those events but did not get a response.

Temple Grandin, author and professor of livestock medicine at Colorado State University, said that punching and kicking livestock is considered abusive.

An expert in livestock welfare, she said that handlers can tap, push and nudge animals. But if the level of force goes beyond what could bend the side of a cardboard box, “it’s abuse. Period.”

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She said the calves’ reaction to the hot iron indicates that pain medication, such as lidocaine, was not applied before the procedure. Double D did not respond to a question about whether medication was given before the procedure.

A pickup truck rolls by the barns at Agresti Calf Ranch at sunrise in Ceres.

A pickup truck rolls by the barns at Agresti Calf Ranch at sunrise in Ceres.

(Tomas Ovalle/For The Times)

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A Taxidermist Gives Dead Animals a New Life

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A Taxidermist Gives Dead Animals a New Life

At 11, Tim Bovard undertook his first taxidermy experiment on a piece of roadkill. He had found an unlucky skunk and improvised its reanimation using an instruction book, much to the alarm of his friends’ parents.

His own parents were unfazed — his father and grandfather were both scientists and outdoorsmen — and soon it was known in their suburban community of Claremont, Calif., that, as Bovard recently recounted: “Dr. Bovard’s son was an animal nut. So when they found the abandoned birds, owls, hawks, kestrels, crows, blue jays, scrub jays, they brought them to me, and I raised them.”

By the time he was a teenager, he was sewing his own clothes, learning to tan leather and taking backpacking trips in the Sierras with his dogs while wearing a full buckskin suit of his own creation. He began apprenticing with a local taxidermist in high school, and then chose to work for him full time through college.

Bovard was always set on his life path, though when he visited friends at college parties, he asked them to stop mentioning what he did instead of going to class, noticing that it gave some people the creeps.

Bovard, still exuberant and energetic at 72, is the last full-time taxidermist at any museum in the United States. He still lives in Claremont, now with his wife, two dogs and “10 and a half cats” (the “half” cat lives mostly outdoors) and wakes most days at 4:30 a.m. to commute to the Natural History Museum of Los Angeles County, where he has worked since 1984. He is responsible for maintaining animal mounts the museum has kept in its collection for more than a century, reworking dioramas that could look more true to life and designing new exhibits.

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In past generations, museums dispatched hunting expeditions to acquire their animal collections, but Bovard works only with donations from zoos or offerings from private collections. As when he was a child, roadkill is another option.

Once the skin is on and the glue is dry, he sews the pelt together, hiding his seams.

“Mammal stitching has to be pretty tight,” he said, especially for lions or zebras. “Now, a bear with long hair? It doesn’t matter so much. For birds, feathers cover it all.”

The care and keeping of these forms is a responsibility he takes both seriously and joyfully. Frequently, he skips his commute entirely and sleeps in his office, rolling out a blanket between filing cabinets that carry the records of every animal in the museum’s 111-year-old collection and the “fleshing wheel” he uses to gently remove tissue from hides.

“It wouldn’t be for everybody,” he said with a smile. “But I am known to be slightly different. That’s putting it sort of mildly.”

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In fact, he has slept at work for weeks at a time, like when he was revamping the museum’s lion diorama and wanted to adjust furry skin folds and feline facial expressions every few hours during the night as the glue set.

Unlike many taxidermists, Bovard is responsible not only for the animals on display in the museum but also for very element of the dioramas, including every tree, leaf, twig, flower, dusting of snow and body of water. He’s made hundreds of thousands of leaves through a method called vacuum forming — a manufacturing technique where plastic is heated and then shaped around a mold using suction — using leaf molds he created himself from plant matter he harvested on research trips.

To do this exacting work, he has amassed an encyclopedic knowledge of the natural world. He knows, for example, that one key to designing a lifelike raptor is the hooding over the eyes. But he also knows the posture that raptor would take sitting on a tree branch, what kind of tree it would be sitting in, the patterns in which it would have preened its feathers, what kind of prey it might be looking for and how its presence would most likely affect the behavior of every other animal in its radius.

For a restaging of a lion family, he wanted two lionesses to be nuzzling foreheads, the standard greeting in big cats, to capture their sociality. He wanted to create more of a sense of dynamic movement in the scene of jaguars perched atop a box canyon in Sonora, Mexico, for example, by adding some small mammal prey, like javelinas, leaping away from the cats.

“It’s all about directing the eye,” he said, pointing toward the far corner of the painted background.

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And then there are all the routine tasks, the things he’ll never stop doing, at least not until he retires, like dusting the museum’s pride of lions, vacuuming elephant ears and polishing all the glass eyes.

When asked about whether retirement is on the horizon, he laughed. He was still sleeping on his office floor as recently as New Years. There’s an orangutan he wants to mount this year, and tens of thousands more leaves to make. “No plans to retire.”

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