A U.S. agency lets development eat up the Florida panther's habitat. The result: an inbred, squeezed species with little hope of survival.
Published April 18, 2010|Updated April 19, 2010

First of two parts

On a quiet spring morning two years ago, a sheriff's deputy cruised along a dark suburban street near Fort Myers. The deputy heard a thump, slammed on the brakes.

Too late. A tawny body lay cooling by the roadside.

The deputy had hit a 2-year-old, 85-pound, male Florida panther. When a veterinarian dissected the cat, he found signs that the endangered Florida panther is in deeper trouble than ever before.

In his May 2008 report, Dr. Mark Cunningham listed three genetic defects - a badly kinked tail, an undescended testicle and, most troubling, a quarter-inch hole in the big cat's heart. Such defects were supposed to be gone from the panther population, vanquished by a bold experiment 15 years ago that involved crossbreeding with Texas cougars.

But now they have resurfaced. And because of a series of decisions made by federal officials, panther experts say fixing the problem this time will be nearly impossible.

In short, the Florida panther is a dead cat walking.

"It's going to be the best-documented extinction ever, unless they do something," said Laurie Wilkins of the Florida Museum of Natural History.

Over the past 15 years, the federal agency in charge of protecting the habitat where panthers roam, hunt and mate has given developers, miners and farmers permission to destroy more than 40,000 acres of it.

The panther is Florida's state animal. It's a license-plate icon, the namesake of Miami's pro hockey team and the mascot of schools around the state. Yet it hasn't received the protection promised by the Endangered Species Act. Here's why:

- The U.S. Fish and Wildlife Service, which spends more than $1.2 million a year on panther protection, has not blocked a single development that altered panther habitat. Former agency employees say every time they tried, "we were told that, politically, it would be a disaster," said Linda Ferrell, who retired from the agency in 2005.

- To bolster the case for allowing development, agency officials have used flawed science. They even manipulated figures to make it appear at one point as if there were surplus panthers.

- Agency officials say they have required developers and others to make up for destroying the habitat. But their own figures show those efforts have fallen short, and now they concede there's not enough habitat left to let the population ever leave the endangered list.

Meanwhile, the panthers are once again producing cats with genetic defects, like the one the deputy hit. In the past seven years, nine have turned up with holes in their hearts.

Cunningham, the veterinarian, calls it "a red flag" that panthers are headed for genetic problems again. There are other signs of trouble, too: changes in their behavior that have proved deadly for suburban cats and dogs.

But because so much of the panthers' habitat has been paved over, officials cannot bring in more Texas cougars, as in 1995.

"Where would we put them? The population is saturated," said Deborah Jansen, who has been studying panthers for 20 years.

The irony isn't lost on those who engineered the panther's original genetic rescue, like Craig Johnson, once the top federal wildlife official in South Florida.

"Numerically they're doing better," Johnson said. "Ecologically, they're screwed."

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The panther used to roam the Southeast by the thousands. But for 40 years the elusive animal has been hemmed into Florida's southernmost tip, in one of the state's fastest-growing regions.

"The panther is arguably the greatest species conservation challenge in the country," said Paul Souza, who now supervises the South Florida office of the U.S. Fish and Wildlife Service.

In the early 1990s, of the 30 panthers remaining, only six females were producing kittens. Because of inbreeding, many carried potentially fatal birth defects.

"It was like they had hit a biological brick wall," said Melody Roelke, the veterinarian who discovered the genetic problems.

There was talk of captive breeding. Instead the state tried a $20,000 gamble. In 1995, biologists turned loose eight female Texas cougars to breed with the panthers. They replenished the gene pool and boosted the population to about 100. The boom highlighted a bigger problem.

For three decades, biologists have known that maintaining enough habitat for these wide-ranging predators is the key to saving the species. Females need 29,000 acres, males 62,000 acres.

Yet as the population grew, federal officials granted permits that converted panther habitat into a new university, new roads and subdivisions - including one ironically called the Habitat. Since the Texas cougar experiment began, the wildlife service has said yes to 113 projects that if built would wipe out more than 42,000 acres of panther habitat.

Each time developers propose altering habitat, biologists with the wildlife service review the impact on the species. They look at whether it will jeopardize the panthers' existence.

The last time the agency offered what's known as a "jeopardy opinion" on a project in panther habitat was 1993, when it objected to Lee County's plans for widening Corkscrew Road. But then the agency offered county officials a way around its objections. As a result, the road was widened, opening up more habitat for development.

Jay Slack, who ran the agency's South Florida office from 1997 to 2005, said he didn't see anything wrong with allowing developers, miners and farmers to transform so much habitat. After all, he pointed out, thanks to the Texas cougars, "the number of panthers has been steadily on the rise. ... It just didn't add up to a risk of extinction."

All in all, Slack said, "I feel like we did a good job."

- - -

Most of the projects the Fish and Wildlife Service has approved since 1995 are in Collier County. The largest is the new town of Ave Maria, which in 2005 was given permission to destroy 5,027 acres of habitat that had been 9 miles from the nearest suburb.

Souza, the Fish and Wildlife Service supervisor, said his agency has permitted development only around the edges of panther habitat. But state panther expert and biologist Dave Onorato said Ave Maria "would be considered in the middle of the habitat. It's not just the footprint going in, but also what ensues: roads, stores, houses."

The project with the largest impact is Lee County's $438 million expansion of the Southwest Florida International Airport near Fort Myers. The construction - a new taxiway, a 28-gate terminal, support facilities, 10 miles of internal roads and a 4-mile highway extension -- subtracted 8,000 acres from panther habitat.

The agency said losing those 8,000 acres would further fragment the remaining habitat and make it more likely panthers would be killed by cars. Yet its official opinion said the airport expansion was "not likely to jeopardize the continued existence of the panther."

The biologist who wrote that said later that he didn't believe it, but feared he would lose his job.

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Andy Eller knew the drill. He said his bosses told him not to find any reason to oppose development, because to say no would invite political disaster.

"They were afraid that if we generated any controversy over the Endangered Species Act, Congress would tamper with the funding for the regional office or for the endangered species program," he said in 2004.

Nevertheless, Eller had a hard time approving the airport expansion in 2002. So, he said, his bosses told him to tweak the numbers.

At the time, thanks to the Texas cougars, there were about 78 panthers, but most were too young or too old to breed. Fewer than 10 were producing young. The agency's official goal was to have at least 50 breeding adults.

Eller said he was told to write the opinion as if all 78 panthers were breeding adults. With 28 "surplus" panthers, the airport expansion couldn't possibly lead to the species' extinction.

Eller later wrote that he knew that this "was wrong in so many ways it's hard to know where to start." Nevertheless, "I was told to incorporate the material without questioning it, under threat of insubordination."

Although other biologists objected, the "surplus" panthers were included in half a dozen more project approvals. Eller wrote that his bosses "showed no trepidation about such bold misrepresentations of panther science, known by the entire scientific community to be wrong."

Eller filed a whistle-blower suit against his agency and was fired. He later was reinstated but transferred out of Florida. The agency acknowledged he was right about the science without acknowledging anything improper.

Last year, Sam Hamilton, then the agency's regional director in Atlanta, was asked by a reporter for a Maryland-based newsletter that reports on endangered species issues to explain the "surplus panthers" problem. Hamilton shrugged it off as a typo. His staff had simply "transposed numbers. ... Didn't make a whole lot of difference in the end."

- - -

Last summer, President Barack Obama picked Hamilton to take over the entire Fish and Wildlife Service. In February, he died of a heart attack. A month before his death, a Times reporter asked Hamilton why former employees said he had repeatedly declined to sign jeopardy opinions in panther habitat.

Hamilton jabbed a finger at the reporter and sputtered, "That's not true!" He contended he would never do anything to hurt panthers: "I love cats! Cougars, pumas - they're my No. 1!"

Hamilton insisted he had never rejected any recommendation for a jeopardy opinion. Asked if he had ever even been handed such a recommendation, he said: "Not that I remember."

But Johnson, the former top federal wildlife official in South Florida, said he saw panther biologists seek approval for more than a dozen jeopardy opinions. The way the system worked was simple: "If it was 'no jeopardy,' I could sign it. If it was 'jeopardy,' then I had to get the regional director to sign it."

Every time Florida biologists proposed a jeopardy opinion to the Atlanta office, Johnson said, "the answer was always: The panthers aren't there yet." That was with fewer than 50 left.

Linda Ferrell, who was once Eller's boss, said the Florida biologists were pressured by top agency officials to always say yes to development.

"We were told in no uncertain terms, jeopardy opinions would not be tolerated," she said.

The crucial factor was ignoring what's called "cumulative impact," Ferrell said. An individual development might not jeopardize the panther's existence. But combined with the projects that came before it, the cumulative loss of habitat showed the species was in jeopardy.

Eller and his colleagues tried to cite cumulative impact, Ferrell said. But the agency bosses "just shot the biologists down. Management made the decision that it wasn't an issue."

In January, Hamilton said he agreed with that. "You have to look at the project itself," rather than lumping it in with all the others, he insisted.

However, six years ago, a federal judge told Hamilton's agency the law required just the opposite. U.S. District Judge James Robertson tossed out a permit for a 6,000-acre mine because the agency failed to consider cumulative impact on panthers.

"When considered in isolation, most individual projects would impact only small portions of potential panther habitat," the judge wrote. "However, when multiplied by many projects over a long time period of time, the cumulative impact on the panther might be significant."

- - -

Souza contended that the Fish and Wildlife Service has allowed development of panther habitat only if the developers made up for the destruction.

The federal agency is supposed to follow a policy of "no net loss" of habitat. But creating new habitat to replace what's being altered is nearly impossible.

So the agency counts land that will be preserved from development as newly created habitat. That way, what's preserved can, at least on paper, make up for what's lost. The other option is writing a check to a fund for buying habitat to preserve it.

Pursuing this strategy, Souza said, "allowed us to not need jeopardy opinions."

However, even if preserving undeveloped land could make up for losing habitat, the agency would flunk its "no net loss" test.

Since 1995, the Fish and Wildlife Service has required the preservation of 30,000 acres of panther habitat. That's 12,000 acres less than what it has allowed to be destroyed.

For the 8,000-acre airport expansion near Fort Myers, for instance, the agency required Lee County to preserve about 6,000 acres. In some cases the difference is even more lopsided. For a highway project that took nearly 2,000 acres, the agency did not require preserving an acre.

Agency officials say they hope to make up some of the lost habitat with a new restoration project. Estimated cost to taxpayers: $435 million.

- - -

To biologist Larry Richardson of the Florida Panther National Wildlife Refuge, the big cats are worth saving because they are "an icon to show us what true wilderness is."

Yet as humans encroach further into what used to be wilderness, panthers have changed their behavior to adapt.

It was common for males to kill each other in a dispute over territory. But beginning in 2001, males started killing females, too.

"It's because of density," said Roelke, the veterinarian who discovered the genetic problems. "These cats have no place to go."

The leading cause of death used to be males killing other males. Now, because of new roads, the panthers' worst enemy is the car. Last year, a record 17 cats were run over.

As more and more people crowd into the panthers' home, panthers are showing up in the suburbs. Unable to find the deer and hogs that usually are their prey, they attack pets and livestock. Among the dead: goats, sheep and a 200-pound colt.

"We know they are taking pets periodically, whether it's dogs or cats," said Onorato, the state panther expert.

Alan Webb, who oversees the Florida biologists who write opinions on development, regards what's left of panther habitat as not a wilderness but "a zoo without walls." Between tracking them with radio collars and tinkering with genetics, he said, "we manage all the panthers."

Actually, the Fish and Wildlife Service is now managing for fewer panthers than the 100 prowling the state's forests and swamps.

The agency's official position is that it is trying to protect enough habitat for 90 panthers, no more. The agency is doing that to attempt to balance the explosive growth of the region with the need to keep the panther population viable, Souza explained.

"If the number of panthers falls under 60, then we've got real problems," he said. "If it's 80 to 100, it's going to be a stable population, albeit one that is going to have genetic problems over time." So the agency split the difference and is managing for 90.

Florida experts say that's wrong. They have told federal officials "they should be managing for more panthers, not less," said Onorato. "A population of 90 is not going to be a viable population. You're not preserving the species."

Actually, federal officials have written off the South Florida population. Studies have found that, to avoid extinction and genetic problems, the panther population would have to be at least 240 animals and "there's not enough habitat in South Florida to support 240 animals," Souza said. Instead, he said, the agency expects that South Florida remnant to serve as "a feeder population for starting a cat population in other places."

Federal officials have talked for 30 years of finding new places for panthers -- in Arkansas or Georgia, for instance -- but have yet to do anything. Hamilton said Central Florida is "the first place we need to look." But it would have to be a "win-win deal for the private landowners."

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The human encroachment into panther territory isn't over. Developers are planning another new town, named Big Cypress. It would put 9,000 homes on 3,600 acres abutting the Florida Panther National Wildlife Refuge. Panthers wearing radio collars have crossed that land 20 times.

The question all Floridians should ask, said the refuge's Richardson, is whether they want to make the sacrifices necessary to save the panther. If they don't, everyone will bear the responsibility for allowing the state animal to fade into oblivion.

"And what would be the next animal that we'll choose to not save?" Richardson asked. "And at what point in time does our choice affect ourselves?"

Times researcher Caryn Baird and multimedia producer Carrie Pratt contributed to this report, which contains information from the Endangered Species and Wetlands Report newsletter. Craig Pittman can be reached at (727) 893-8530 or

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About this report

This report on the loss of Florida panther habitat builds on previous reporting done for articles in 2005 and 2006 regarding Florida's vanishing wetlands. Over more than two years, Times environmental reporter Craig Pittman interviewed 50 people, analyzed thousands of pages of documents and made numerous visits to areas of South Florida where panther habitat bumped up against new suburbs.

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Coming Monday

Federal officials convened a panel of experts to map the Florida panther habitat that needed saving - then failed to even publish the report.

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Panther facts

- The Florida panther was declared the state animal in 1982, chosen over the manatee and the alligator by a vote of the state's schoolchildren.

- They were on the original endangered species list, issued in 1967.

- When the Endangered Species Act passed in 1973, there were only 20 to 30 panthers left. Some state officials even believed they were extinct.

- The World Wildlife Fund hired a Texas puma hunter, Roy McBride, to travel to Florida in 1972 and find out if there were any panthers left. He found signs of panthers, and in 1973 captured one near Lake Okeechobee, a gaunt, tick-infested 9-year-old female.

- The average lifespan of a Florida panther in the wild is 12 years.

- Males average 130 pounds and measure 6 to 8 feet with the tail, while females average 80 pounds and measure 5 to 7 feet including the tail.

- Bobcats, which are far more common in the wild and more widely seen across the state, are often confused with panthers. But the Florida bobcat is much smaller than the Florida panther - in fact, it's not much larger than a domestic cat.

- Since 1990, much of the state's research into the Florida panther is financed by sales of the Florida panther specialty license plate. The plate brought in more than $1.3 million in 2008, the year with the most recent figures.

- Their scientific name is Puma concolor coryi, a name that honors the first scientist to describe the Florida panther, Charles Cory.

- Panthers are nocturnal animals. They sleep during the day and hunt, travel and mate at night.

- Scientists first began capturing panthers and attaching radio collars to them in 1981. Using signals from the radio collars they can study their movements. However, scientists do not have collars on all panthers. Currently 28 have them.

- In the 29 years since the panther-capture program began, only one panther has died during a capture. The tranquilizer dart intended to put the animal to sleep hit an artery, delivering the dosage too quickly. Controversy over the death nearly ended the program. Meanwhile, the animal was stuffed and put on display in Tallahassee. It currently stands near the entrance to the State Library of Florida.

- McBride still tracks panthers, now for the state Fish and Wildlife Conservation Commission. He calculates the panther population not only by studying the data from radio-tracking signals, but also from looking for signs they leave behind in the landscape: tracks, scat, scrapes and scratches on trees.

- Florida panthers do not roar. They do make sounds, though: chirps, peeps, whistles, purrs, moans, screams, growls and hisses.

- Their preferred diet consists of deer, wild hogs and some smaller animals, such as raccoons and armadillos.

- Panthers stalk their prey, moving in quietly. Although they do not chase down the deer and wild hogs they eat, they can spring as far as 15 feet for the kill. Panthers usually kill large prey by a bite to the back of the neck, severing the spinal cord.

- Panther kittens are reared by their mother in a den. The average litter size is two kittens.

- When kittens' eyes first open they are blue. Young cats' fur is spotted, and they have five rings on their tails. As they get older their eyes darken, and their fur and tail become more of a uniform tawny shade. There are no Florida panthers that are black.

- The mother leaves the kittens alone in the den to go out and forage for food. After making a kill, she will eat as much as she can and will return to the den to nurse her kittens.

- When the kittens are about 2 months old, they begin to tag along with their mother when she hunts. By 9 to 12 months they are catching small prey on their own, such as raccoons and armadillos.

Sources: Florida Fish and Wildlife Conservation Commission and Friends of the Florida Panther National Wildlife Refuge

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Still Florida panthers

In the early 1990s Florida panthers were suffering from genetic problems that could have doomed the species. So in 1995, the state imported eight female Texas cougars to breed with the panthers. The genetic diversity was refreshed and the population boomed. The cougars were removed from the wild by 2003. The original kittens produced by the crossbreeding are considered Florida panthers and therefore fall under the Endangered Species Act just like purebred ones. The reason: Historically, back when panthers roamed the Southeast, the Florida panther subspecies interbred with the Texas subspecies.

* * *

While the 1995 Texas cougar experiment boosted the panther population, federal officials were using flawed science to allow developers to wipe out thousands of acres of panther habitat. At one point they even claimed — falsely — that there were too many panthers.

By claiming there was a surplus of 28 panthers, the U.S. Fish and Wildlife Service could approve a massive airport expansion near Fort Myers that altered 8,000 acres of panther habitat. The biologist who wrote the report later said that his bosses "showed no trepidation about such bold misrepresentations of panther science, known by the entire scientific community to be wrong."