Category Archives: Key Deer

The Key Deer and the Screwworm: How Science Saved an Endangered Species — and Why It Matters Again

This past December, I found myself in Big Pine Key, camera in hand, surrounded by the quiet beauty of Florida’s Key deer.

I was there with my friend and collaborator, Paul Fuzinski of Aptitude Outdoors and his wife Christina photographing and filming these animals as part of our ongoing work in wildlife documentary storytelling.

The tiny Key deer move differently than most whitetails—smaller, gentler, almost ghostlike as they slip between hardwood hammocks and pine rocklands.

And when I say tiny we’re talking a big buck tops out at round 60 pounds on the hook. They are the smallest subspecies of whitetail and are a federally endangered species.

In fact, standing there in the early light, it was impossible not to think about how close these deer once came to disappearing altogether.

Their survival is not accidental. It is the result of one of the most important — and often overlooked — wildlife conservation victories in North American history.

In the 1950s their population was down to 50 when the Boone & Crockett Club (B&C) donated $5,000 to hire a game warden named Jack C. Watson to protect them from poachers. Eventually, this action and his efforts were heralded as saving the species altogether.

This action of the B&C is virtually unknown outside of the club itself and a few people in the Keys. I found it out while doing some serious research on the species a few years ago. This is literally a case where hunters stepped in and saved a species outright.

Most recently, according to the U.S. Fish and Wildlife Service (USFWS) officials, Hurricane Irma in 2017 killed 21 deer with an additional dozen killed in the chaotic aftermath. With the latest estimates showing only 949, that hurts.

For perspective, I have hunted on a single 5,000 acre low-fence Texas ranch with more whitetails than that.

Additionally, an old foe last seen in the U.S. more than 30 years ago, hit the Keys hard in 2016. But Texans came to the rescue.

“Screwworms infested the population, which is spread across more than 20 islands. It led to 135 Key deer deaths, including 83 that were euthanized to reduce the risk of further infection,” said Dr. Roel Lopez. “This was a significant blow to a species, which is uniquely located in that area.”

Doctor Lopez is director and co-principal investigator for the Key deer study, San Antonio, a project of Texas A&M University (TAMU). TAMU, along with various agencies including USFWS, alleviated the crisis by preventive treatment and fly eradication efforts. This included feed stations lined with anti-parasitic medications and releasing 60 million sterile male screwworms to mate with wild female flies and curb reproduction.

That is a big effort for a little deer, but there is much love for them among those who understand their delicate existence. A single disease outbreak or storm could literally wipe out the population.

A more consistent issue is roadkill.

When we visited, the sign at the refuge headquarters said 121 were killed by vehicles in 2024 and by our visit Dec. 10, 2025 some 91 had been hit.

The National Key Deer Refuge was established in 1957 to protect and preserve the national interest the Key deer and other wildlife resources in the Florida Keys.

The Refuge is located on Big Pine and No Name Key and consists of approximately 9,200 acres of land that includes pine rockland forests, tropical hardwood hammocks, freshwater wetlands, salt marsh wetlands, and mangrove forests.

It gives them a place to exist but as roads intersect much of it, mortality is still an isssue.

In 2025 New World screwworm has been detected again in parts of Mexico, raising concerns among wildlife biologists, veterinarians, and agricultural officials.

History has shown that the screwworm does not respect borders. Left unchecked, it can move northward, re-establishing itself in regions where it was once eradicated.

For wildlife like the Key deer, the return of screwworm would be catastrophic. For livestock, it would represent billions of dollars in losses. And for conservationists, it would mean fighting a battle we already know is costly, complex, and urgent.

Standing in Big Pine Key this December, watching a doe and her fawn move through the palmettos, it was impossible not to think about how fragile recovery can be. Conservation victories are not permanent unless they are protected.

The story of the screwworm reminds us that vigilance is just as important as scientific innovation.

It also reminds us that many of the greatest conservation successes happen quietly, behind the scenes, through collaboration rather than controversy. Texas A&M’s role in eliminating the screwworm helped save not only the Key deer, but countless other wildlife species and agricultural livelihoods across the country.

The Boone & Crockett Club’s recognition of this effort underscores how deeply connected hunting heritage, science, and wildlife conservation truly are.

Paul and I left Big Pine Key with more than footage. We left with a renewed sense of responsibility to tell this story fully. In 2026 we will be producing a mini-documentary focused on the Key deer, not just their beauty, but the unseen threats they’ve survived and the people who stepped in when it mattered most.

The Key deer are still here because science, cooperation, and commitment won out over complacency. As the specter of screwworm once again looms to the south, their story serves as both a warning and an inspiration.

Sometimes saving wildlife isn’t about finding something new.

Sometimes it’s about remembering what almost happened and making sure it never happens again.

Chester Moore

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A Look At Mysterious Micro Deer

My late uncle Jackie Moore was a man of few words.nOn the rare occasions he told a story, it always seemed to have an interesting twist, especially when it came to outdoors experiences, especially when he told me about encountering a micro deer.

“This deer crossed the road in front of us on in San Saba and it had a full eight point rack but it was half the size of a normal whitetail. It was the size of a medium-sized dog.”

He related that account several times and after his passing I mentioned it to my Dad and was shocked at what I heard.

“I saw one of those little bucks down in San Saba too. We hunted the same lease and I saw one there. It was half the size of the other bucks with a full rack.”

Considering the Texas Hill Country has some of the nation’s smallest deer, that would put the weight of this tiny buck at around 40 pounds.

After pondering this I started looking for photographic evidence.

Photos of someone holding a super tiny fawn that fits in one’s hands circulate on the net and often claim they are whitetail. They are not. Those are muntjac deer which hail from Asia and only get to about 35 pounds at adulthood.

Here’s a shot of me with a muntjac fawn that was a couple of weeks old when the photo was taken.

After blogging on this issue last fall a reader sent a photo that is without a doubt the best proof of “micro whitetails” I have ever seen and this is the first time it has been published

Reader “Alonzo” sent in this photo from a game camera.

Notice the small buck is in the foreground so it should appear larger than the one in the background. That means this deer is indeed a tiny one and would fit the size description of the ones my Dad and Uncle encountered in Central Texas more than 40 years ago.

In conducting an Internet search on the topic I found several references.

We use to have one where I went to college. Can’t remember what everyone named it but it was a dwarf deer. People would see it all the time and it was about half the size of a normal adult deer as well. These deer were very tame too as they were never hunted in an urban area so you could get fairly close to them. Use to trap deer there and then tackle them so we could put tags in them and do some research. Tried to get the mini but never did get him to go in one of the traps. (From T_3 Kyle on Taxidermy.net)

Here’s another example.

I was watching some hunting show. I can’t remember which one it was, but they showed a midget whitetail buck walking down a trail. It was neat looking, short stubby legs and it had a nice little rack too. (From JMBFishing2008 on Indianasportsman.com)

The Key Deer is the smallest subspecies of whitetail and it is found only in the Florida Keys chain of islands. The next smallest is the Carmen Mountains Whitetail found in a remote mountainous region of West Texas and northern Mexico.

We recently took a Higher Calling Wildlife expedition to the Florida Keys and the 14-year-old boy we took with us took this photograph.

Key deer are federally endangered species with less than 700 in existnece.

I am left with the following question.

Is there a recessive gene akin to dwarfism in whitetails? Have you seen one of these deer? If you then shoot us over a report or preferably a photo or video link to chester@chestermoore.com.

Whitetails are the most common large animal in North America and the idea of micro versions running about is truly fascinating.

Chester Moore

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