15 Cattle Dropped Dead In One Day On Colorado Ranch Remains A Mystery

An interesting report (bottom), but not a mention about vaccinations or other medicines which would be my first question. And they’ve been using mRNA vaccines on swine since 2018. So I found the following recommendation from a vet’s site quoted below. And we know from the electron microscope and testing that the quality control on COVID gene therapies was atrocious, so what’s happening with other pharmaceuticals with today’s workforce? Worth pointing out, the OCGFC who used the WEF to keep telling us we need to stop eating meat to save the world from the hoax of “global warming”, controls these pharmaceutical megacorps and bringing in a lot of ranches and farms under their big agriculture megacorps, so could they attack cattle populations? Also, they’ve engineered tick born illnesses like Lyme Disease and Alpha-Gal Syndrome (meat allergy), so could there be another vector and/or illness?

Vaccination Schedule For Beef Cattle

Calves:
  1. 2-4 Months: Dehorn, Castrate bull calves.
  2. 4 Months: 7way blackleg, IBR, BVD, BRSV, PI3, (modified live vaccine MLV). *See CAUTION NOTE BELOW*
  3. 4-5 weeks prior to weaning: IBR, BVD, BRSV, PI3, Pasteurella (modified live vaccine MLV), worm. *See CAUTION NOTE BELOW*
  4. Weaning: IBR, BVD, BRSV, PI3, (modified live vaccine MLV), 7way blackleg booster, 5 way lepto, worm.

v  Brucellosis (Bangs) vaccine given to heifer calves between 4-12 months old. Must be administered by a veterinarian.

v  For purchased calves, give initial vaccinations at weaning or delivery. For rapid immune response, usa an intranasal IBR, PI3 treatment in addition to modified live IBR, BVD, PI3 injection.

Adult cows:
  1. IBR, BVD, BRSV, PI3, 5way lepto annually. Must use killed vaccine if cows are pregnant.
  2. If using natural service, vibryo given 2 weeks prior to breeding.
  3. Worm spring and fall; recommend using brand-name dewormers

CAUTION: Some MLV’s are not recommended to give to calves that are nursing cows. Always read label and consult our office if you have any questions.

https://hcvconline.com/about-our-clinic/recommended-vaccinations-for-large-animals

https://cowboystatedaily.com/2025/06/02/why-15-cattle-dropped-dead-in-one-day-on-a-colorado-ranch-remains-a-mystery/

A Colorado ranch family suffered a devastating loss when 15 head of cattle died suddenly in a single day. Weeks later, they still haven’t figured out why.

By Mark Heinz

The Higgs family ranch near Coal Creek, Colorado, lost 15 cattle in a single day. The animals, mostly heifers (mother cows) died suddenly after suffering seizures, and nobody can figure out why.
The Higgs family ranch near Coal Creek, Colorado, lost 15 cattle in a single day. The animals, mostly heifers (mother cows) died suddenly after suffering seizures, and nobody can figure out why. (Courtesy Kerri Higgs)

More than three weeks after 15 of their cattle fell over, suffered seizures and died in a single day on a Colorado ranch, the cattle’s owners remain completely baffled as to the cause.

“It’s just the strangest thing. My husband has been a cowboy his entire life and he said he’s never seen anything like it,” Kerri Higgs told Cowboy State Daily.

“At first it was devastating. Now, I’m just angry. I keep going and talking to people” seeking help to unravel the mystery of what killed her family’s cattle, she added. 

‘We Just Thought It Was A Noxious Weed’

Early on May 8, Higgs got a call from her husband, telling her that while checking on a small herd made up mostly of first-time heifers (new mother cows) and calves, he and some ranch hands had found three of the cows dead. 

Not the best of news, but not out of the ordinary. 

Higgs and her husband have been raising cattle for about a decade on their place near Coal Creek in Fremont County, Colorado. 

And like any ranchers, they know that occasional cattle losses are part of the business. 

“We just thought it was a noxious weed” that had killed the cows, she said. “We were going to deal with it, because that’s what happens sometimes.”

They moved the rest of the herd out of the pasture where the three cows had died, thinking that would be the end of it. 

Things Get Gruesome

But that afternoon, during further checks on the cattle, things started getting gruesome. 

One of the heifers suddenly fell over. 

“She would just get up and fall down. Then get up and fall back down again,” Higgs said. “Then she went into seizures, with her eyes rolling back into her head.”

As cattle hands watched helplessly, one cow after another, mostly the heifers, started suffering the same awful symptoms.

Some died on their own. Others were put out of their misery. 

“My husband told me, ‘I can’t keep watching them suffer like that,’” and shot some of the cattle, Higgs said. 

The final death toll included 13 first-time heifers, one steer and one yearling. 

Survivors from the herd included 15 calves — 13 of which lost their mothers — two heifers with calves, two pregnant heifers, a bull and 7 yearlings.  

The Higgs’ also have a second small herd of cattle, which were miles away in another pasture and unaffected. 

However, to make matters worse, just after the cattle from the first herd died, one of the ranch’s horses ran into a fence post and broke its neck, Higgs said. 

She thinks the horse might have been sent into a panic by a predator, perhaps a mountain lion or bear. 

These calves on the Higgs ranch in Colorado lost their mothers on May 8, when the mothers went into seizures and died. It is not yet known what killed the cattle.
These calves on the Higgs ranch in Colorado lost their mothers on May 8, when the mothers went into seizures and died. It is not yet known what killed the cattle. (Courtesy Kerri Higgs)

What Killed Them?

The county sheriff came to inspect the scene, as did a local veterinarian, Higgs said. 

The veterinarian determined that it was likely brain swelling that killed the cattle, but a cause has remained elusive. 

There is an old oil well in the pasture where the first three cows died. 

The original prognosis is that the cattle likely died from sulfate poisoning from water they drank. 

But tests from water samples taken from water troughs and pooled rainwater in the pasture came back negative for sulfate contamination. 

“They withdrew that original prognosis,” Higgs said. 

The Colorado Energy and Carbon Management Commission (ECMC), plans to send personnel to test for gasses and soil contamination in the pasture, she added. 

She’d also like a thorough necropsy done on at least one of the cattle carcasses, or at least a cow’s head, but that hasn’t happened yet, Higgs said. 

Big Financial Loss

The cost of such a big, sudden loss of cattle is tough to calculate, Higgs said. 

The immediate loss, just the value of the cattle that died, is probably $50,000 to $70,000, she said. 

But losing 13 heifers all at once will have lingering effects, Higgs added. 

“We expected to have those momma cows for 12 years each. In my opinion, we’re out a quarter-million dollars because of all the calves we’re never going to have from them,” she said. 

GoFundMe site has been set up to help the family recover from its losses. 

Higgs said that right after their huge loss, she and her husband briefly considered giving up on ranching. 

But they love what they do and decided that quitting isn’t an option, she said.

“I think we’re going to just keep trying,” Higgs said.