Can the UK's Common Toads Survive from Traffic and Population Collapse?
It is a Friday evening at 7:30, but rather than going out or relaxing at home, I've taken a train to a town in Wiltshire to join volunteers from a toad patrol. These committed people give up their evenings to safeguard the local toad population.
A Worrying Drop in Population
The Bufo bufo is growing more uncommon. A recent research conducted by an wildlife conservation group revealed that the UK toad population have dropped by half since the mid-1980s. Observing a creature that has been a fixture of the UK landscape in decline is labeled "concerning" by researchers. Toads "don't need very particular environments" and "should be able to live quite well in most of areas in Britain," meaning if even they are struggling to persist, "it kind of suggests that things are not as they should be."
The UK toad population has almost halved since 1985
The Danger from Roads
Though the research didn't cover the causes for the drop, traffic certainly plays a part. Estimates indicate that 20 tons of toads are killed on UK roads annually – in other words, several hundred thousand. Unlike frogs, which might be happy to mate "if you left out a small container," toads prefer big bodies of water. Their capacity to stay out of water for longer than frogs means they can journey farther to reach them – often long distances. They usually follow their traditional paths – it's typical for mature amphibians to return to their birth pond to mate.
Breeding Patterns
Appropriately enough, the initial amphibians begin their quest for a mate around February 14th, but some move as far as spring, waiting until it gets night and moving after sunset. During that time, toads begin migrating from where they have been hibernating "all pretty much at the same time."
One volunteer, who was raised in the area and has been working to save its amphibians since he was a boy, notes that "Their sole purpose: to go and have an orgy." If their route crosses a road, they could be killed by traffic, and that breeding season would never happen – stopping a next generation of toads from being produced.
Toad Patrols Throughout the United Kingdom
Seeing many of dead toads on nearby streets "inherently strikes a chord with people," and has resulted in the formation of rescue teams throughout the UK – hundreds of organizations are officially listed with a countrywide program. These teams pick up toads and carry them across roads in containers, as well as recording the quantity of toads they encounter and lobbying for other protection measures, such as road closures and underground wildlife tunnels.
Patrols usually work during the migration season, when amphibian movements are frequent. However, this implies they can overlook groups of young toads, which, having been eggs and then tadpoles, exit their water habitats over an unpredictable schedule in the end of summer. Because of their small stature – just a couple of cm wide – "they are destroyed by vehicles." And as being run over "basically turns them into mush," it's more difficult to get data on them. At least when mature amphibians are killed, their carcasses can be counted.
Annual Efforts
Unlike many groups, a specific volunteer group, who are in their eighth season of functioning, go out year-round – not nightly, but whenever weather are damp, or if a member has posted about a amphibian spotting in their group chat. When I ask to join them on patrol, they concede it is "not a toady night" – toad hibernation season has started and it's been a dry day – but a few of the volunteers gamely agree to walk up and down their area with me and search for any toads. "Should anyone can find any toads tonight, that pair will spot one," says the group coordinator, pointing to her 14-year-old son and the experienced member. After for two hours without a single toad sighting, and now they have climbed over a barbed wire fence to inspect beneath some wood.
Family Participation
The family duo joined the group a while back. The youngster loves all things nature-related and has an goal to become a environmentalist, so his mother started to search for activities they could do jointly to protect native animals. Now she enjoys it as much as he does, the 41-year-old entrepreneur tells me – so when the group was looking for a fresh coordinator lately, she volunteered for the role.
The youth, too, has played an important role in the organization. A clip he made, imploring the local council to block a street through a nature reserve during migration season, influenced the outcome the group's way. After a twelve months of lobbying, the council approved an "access-only" restriction between 5pm and 5am from February through to April. Most drivers respected and avoided the road.
Other Wildlife and Difficulties
Several cars go past when I'm out on patrol and we discover some casualties as a result – no toads, but several crushed salamanders. We see one living newt as well, and the teenager is especially excited to see a daddy longlegs, which dances in his palms. Yet despite the team's best efforts to let me see a toad, the local population has clearly gone dormant for the colder months. It appears that I wouldn't have had any more luck anywhere else in the country – all the rescue teams I reach out to clarify that it's very difficult at this season.
They project rescuing nearly 10,000 grown amphibians during migration
A message I receive from another volunteer, who has generously made the effort to look for toads in a noted location, thought to be the largest accurately monitored toad population in the UK, arrives in my inbox with the title: "None found." However, in February and March, he tells me, the group plans to assist around ten thousand mature amphibians across the road.
Impact and Limitations
How much of a difference can these organizations truly achieve? "The reality that volunteers are performing this regularly on chilly, wet and miserable evenings is remarkable," notes an researcher. "That's something that very much should be celebrated." However, while toad patrols are able to reduce the drop, they can't stop it completely – not least because vehicles is not the only threat.
Additional Threats
The climate crisis has meant longer periods of drought, which create the poor environment for some of the creatures that toads eat, such as invertebrates, while higher water temperatures have caused an rise of toxic plants, which can be harmful to toads. Milder winters also lead toads to wake up from their dormancy more frequently, disrupting the resource preservation crucial to their life cycle. Habitat destruction – particularly the disappearance of large ponds – is another menace.
Experts are "often concerned about putting too much of a utilitarian spin on biodiversity," however "There is a big value in just having these animals around." But toads do have an significant part in the ecosystem, consuming almost any invertebrates or small animals they can fit in their mouths and in turn sustaining a number of predators, such as wildlife. Improving conditions for toads – ie building water habitats, conserving woodland and installing toad tunnels – "we'll improve them for a wide range of other species."
Historical Importance
An additional motive to try to keep toads present is their "important cultural value," adds an specialist. Myths and folklore around toads go back {centuries|hundred