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Conservation biologists often grapple with the challenge of population imbalances: some species are overpopulated, while others face endangerment. Due to the vast variety in the animal and plant worlds, conservation efforts frequently focus on finding the most effective ways to eradicate harmful species and promote the growth of beneficial ones. Here are some of the most innovative strategies scientists have employed to manage the fate of various species.
10. Panda Survival Training
Some panda breeding programs in captivity have ended in tragedy, such as the case of Xiang Xiang, a captive-bred panda that died only a year after being released into the wild. This is where the concept of panda boot camp was introduced. Tao Tao, a giant panda, was raised at the Wolong Nature Preserve with the aim of preparing him to survive in the wild.
Along with receiving basic training from his mother, such as climbing skills, Tao Tao underwent specific drills to help him navigate potential dangers like storms, mudslides, and predators. Crucially, the scientists only interacted with him while wearing panda suits and using panda scents to avoid him becoming accustomed to human contact. Tao Tao was released into the wild in 2012 and was recaptured for a health check in 2017, where it was reported that he was thriving in his natural habitat. Each year, the Wolong panda survival school trains several panda cubs, subjecting them to rigorous drills to ensure they are equipped to survive in the wild.
9. Fish-Zapping Vacuum Robots
From the creators of Roomba comes the Guardian, a marine robot designed to target and neutralize as many lionfish as possible. The lionfish is a venomous species that poses a significant danger to ecosystems in places like the Bahamas, where it preys on far more species than local predators can handle. Due to its venom, no predators are interested in the lionfish, though humans can safely eat it when prepared properly. However, catching lionfish using traditional fishing techniques is a challenge.
This is where the Guardian robot steps in. The current version of the Guardian can dive as deep as 500 feet, stunning lionfish and vacuuming them into a collection tube to bring them back to the surface. While it still requires remote control during deployment to ensure it avoids other species, future versions are expected to pinpoint lionfish with Terminator-like precision.
8. Dugong Drone Surveillance
Dugongs, relatives of the manatee found in the Indian and Western Pacific oceans, play a vital role in coastal ecosystems. These timid creatures have long posed a challenge for scientists who seek to track them using traditional methods. Until recently, the best approach was aerial surveys using a seaplane, but these flights can be both hazardous and expensive, especially when refueling stations are miles away from any inhabited land.
This is why scientists turned to drones, creating a remote tracking system that’s far more eco-friendly and precise than using planes. Drones are launched from small boats and can capture thousands of images during a flight. These images are processed by a dugong-detection algorithm that is accurate around 70% of the time. This method allows researchers to quickly create population density maps for this endangered species, completing the task in just a few days. It’s probably a much more productive use of drone technology than whatever your eccentric neighbor is doing with them.
7. Undercover Crane
If you want to hang out with cranes, you have to fit in. That’s the idea behind breeding programs where whooping cranes are raised by human surrogates dressed in white robes and using crane-shaped hand puppets. Whooping cranes tend to imprint on their caregivers, often seeing them as parental figures. However, this can lead to confusion when the crane matures and perceives humans as potential mates. The solution? Trick the cranes into thinking humans are just another type of crane.
Whooping cranes, the tallest birds in North America, are easily able to recognize humans as similarly large. To complete the disguise, the human wears a full-body white covering with a crane head puppet attached to one arm. While interacting with the cranes, human sounds are minimized and the calls of other cranes are played, helping the chicks become familiar with their species' sound. These creative conservation techniques have helped the whooping crane make a remarkable recovery from near extinction. In the 1940s, only 16 cranes were left; today, over 800 thrive in the wild.
6. Robot Scarecrow Fish
Not every fish control initiative requires the dramatic approach of capturing invasive species with a vacuum robot. Sometimes, a bit of intimidation does the trick. This concept led to the creation of a silicone robot by researchers at NYU, designed to mimic a large-mouthed bass. Its target: the mosquitofish, a small species originally introduced to freshwater habitats to manage mosquito populations but now causing ecological disruptions.
Initial tests of this robot bass revealed it could induce stress in mosquitofish populations, even causing them to lose weight. Stress and weight loss diminish their ability to reproduce, which would help control their numbers. The aim is to manage mosquitofish populations without resorting to killing them—out of humane considerations and because the species is so widespread that large-scale eradication could harm the ecosystem. While the robot bass is still in the prototype phase, future models could be deployed into the wild to spook any mosquitofish they encounter.
5. Transcontinental Muskox Train
This one harks back to the early days of American wildlife conservation. Muskoxen were once common in parts of Alaska until the late 19th century, when overhunting and climate changes led to the extinction of the last Alaskan herds. This loss spurred action from U.S. legislators, and in the 1930s, Congress allocated funds for the reintroduction of muskoxen to Alaska. Thanks to this initiative, there are now over five thousand muskoxen in the state.
Here’s how it unfolded: First, 34 muskoxen were captured by Norwegian sailors in Greenland and transported to Norway. From there, they boarded a steamship bound for New York City, where they were quarantined for a month, unable to enjoy any of the city's famous attractions. Afterward, they boarded a train to Seattle and another steamship to Seward, Alaska. From there, they took another train to Fairbanks, Alaska, where they had a five-year rest before boarding yet another steamship to Nunivak Island in the Bering Sea (which almost sank during the journey). Considering muskoxen are covered in two layers of thick wool for Arctic winters, one can only imagine how uncomfortable the 8,000-mile journey must have been. Nevertheless, most of the original herd survived, and the population on Nunivak now numbers around 600. The herd also helped establish several thriving populations on mainland Alaska.
4. Electroejaculation
Artificial insemination is a common practice in agriculture and conservation, but some species aren’t exactly keen on the traditional methods of sperm collection. While horses and certain bulls can be persuaded to cooperate in a pinch, what about more dangerous animals like lions or tigers? The solution for this is electroejaculation, typically used on livestock where getting too hands-on isn't ideal. The procedure involves inserting a rectal probe that fluctuates between low and high voltages, stimulating muscle contractions to induce ejaculation. Initial prototypes developed on domestic cats using plastic tubes and copper wires have been modified for larger animals like Amur leopards and Siberian tigers. A notable success at the Singapore Zoo resulted in a lion cub, Simba, produced from the electroejaculation of an elderly lion named Mufasa. Simba was Mufasa’s first cub, though sadly it was also his last, as the procedure proved fatal. Still, it’s probably a gentler end than being trampled by wildebeests.
3. Beaver Skydiving
After World War II, people began settling around Payette Lake in Idaho, a region previously occupied by beavers for centuries—without a single Mini-Mart in sight. As the human population grew, the beavers started to retaliate by damaging irrigation systems and orchards. Unsurprisingly, people didn’t want to move away, so they had to find a way to relocate the beavers. The mountainous terrain of Idaho made relocation by horse and truck costly and dangerous, especially since beavers cannot endure prolonged heat without access to water.
The answer came in the form of military planes and surplus parachutes. Wildlife managers developed a box strong enough to hold a beaver and designed to open gently when it touched the ground. The first tests involved an older beaver named Geronimo, who was repeatedly dropped from a plane in his box, with a parachute, until the scientists were sure it was safe. Don’t worry about Geronimo, though. He was given VIP treatment on the first flight to his new home, accompanied by three female beavers. In total, 76 beavers were successfully relocated to the Idaho wilderness, with only one casualty—who happened to fall out of his box after it opened prematurely.
2. Poison Toad Sausage
Cane toads are infamous for their destructive role as invasive species. Their venomous nature and presence in Australia have made them a target of contempt, often featured in viral videos showing drivers running them over. A primary concern is their impact on local creatures like the quoll, a small marsupial that preys on the toads but can die from the toxins in their skin. Despite the danger, the quolls are attracted to the toads, so researchers have come up with a method to make toad meat less appealing. The process involves freezing live toads to death, skinning them, and grinding the bodies into sausages—an admittedly foul-smelling task. Thibenzole, a chemical that causes nausea, is then added to the mix, and these tainted toad sausages are dropped from helicopters into quoll habitats. Although the results from the initial drop in 2018 weren’t definitive, the sausages seem to be helping to deter quolls from consuming the poisonous toads.
1. Bird Ejaculation Helmet
Sirocco the kakapo, a bird from New Zealand, has a rather peculiar fondness for humans. This flightless, nocturnal parrot comes from a species on the brink of extinction but has made a recovery through careful breeding. Unfortunately for Sirocco, growing up around humans led him to imprint on his caretakers, leaving him with little interest in mating with his own kind. He’s even tried to mate with humans, most notably in a 2009 viral video where he mounted zoologist Mark Cawardine in an attempt to mate with his skull.
In response to his unusual behavior, scientists created Sirocco an “ejaculation helmet”—a rubber headpiece covered in dimples to collect his semen. However, the kākāpō is known for being a slow lover, often taking nearly an hour to finish, and no one was quite willing to endure such prolonged intimacy with a bird. As a result, Sirocco remained celibate. Despite the helmet’s failure, the story of Sirocco helped draw global attention to the challenges his species faces, and we consider it a victory for conservation nonetheless. Now in his twenties, the celebrity bird lives alone on an island, occasionally receiving visits from the “heads” of former lovers. The helmet itself is now on display at the national Museum in Wellington.
