Will Britain's Common Toads Be Saved 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 market town in Wiltshire to join volunteers from a toad patrol. These dedicated individuals sacrifice their evenings to safeguard the native amphibian community.
An Alarming Decline in Population
The Bufo bufo is growing more uncommon. A recent study conducted by an amphibian and reptile charity showed that the UK toad population have dropped by half since the mid-1980s. Seeing a creature that has been a fixture of the UK landscape in decrease is labeled "worrying" by experts. Toads "don't require very particular environments" and "ought to live successfully in most of areas in Britain," so if even they are not managing to survive, "it indicates 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 examine the reasons for the decline, traffic is a major factor. Calculations suggest that 20 tons of toads are crushed on UK roads every year – in other words, several hundred thousand. In contrast to frogs, which might be content to mate "if you left out a small container," toads prefer big bodies of water. Their ability to remain away from water for longer than frogs allows they can journey farther to reach them – often long distances. They tend to stick to their traditional paths – it's typical for mature amphibians to return to their natal pond to mate.
Breeding Patterns
Fittingly, the initial amphibians begin their quest for a mate around February 14th, but others travel as far as April, waiting until it gets night and travelling after sunset. During that period, toads start moving from where they have been overwintering "all pretty much at the same time."
One volunteer, who grew up in the area and has been trying to protect its amphibians since he was a boy, notes that "Their sole purpose: to go and mate." If their path crosses a road, they could all get run over, and that mating period would be lost – stopping a next generation of toads from being produced.
Toad Patrols Across the United Kingdom
Finding many of toad carcasses on local roads "resonates deeply with people," and has resulted in the formation of rescue teams throughout the UK – 274 groups are currently registered with a national initiative. These groups pick up toads and carry them over streets in containers, as well as counting the number of toads they find and lobbying for other safety solutions, such as blocked roads and amphibian passages.
Patrols usually work during the migration season, when toad crossings are more regular. However, this means they can overlook groups of young toads, which, having existed as eggs and then tadpoles, exit their ponds over an irregular timetable in the end of summer. Because of their small stature – just a couple of cm wide – "they can get obliterated by car traffic." And as being run over "essentially crushes them," it's more difficult to get data on them. At least when adult toads are lost, their remains can be tallied.
Year-Round Work
In contrast to most patrols, a specific volunteer group, who are in their eighth season of functioning, go out year-round – not nightly, but when conditions are damp, or if a member has posted about a toad sighting in their messaging app. When I request to accompany them on patrol, they concede it is "not ideal conditions" – winter dormancy has started and it's been a arid period – but several of the volunteers gamely agree to patrol their route with me and see what we can find. "Should anyone can locate any toads tonight, those two will spot one," says the patrol manager, pointing to her teenage child and the experienced member. We've been out for two hours without a single toad sighting, and now they have climbed over a barbed wire fence to inspect beneath some wood.
Family Involvement
The mother and son joined the group a while back. The youngster loves all things wildlife and has an ambition to become a conservationist, so his mother started to search for things they could do together to help native animals. Now she loves it as much as he does, the middle-aged entrepreneur tells me – so when the group was looking for a new manager lately, she decided to step up.
The youth, too, has played an important role in the group. A clip he created, urging the local council to close a road through a protected area during breeding time, influenced the outcome the group's way. After a year of campaigning, the council agreed to an "access-only" rule between 5pm and 5am from late winter through to April. Most drivers duly avoided the road.
Additional Species and Challenges
A few cars go past when I'm out on duty and we find some victims as a result – no toads, but several crushed salamanders. We spot one living newt as well, and the teenager is particularly pleased to see a harvestman, which dances in his palms. Yet in spite of the group's hardest attempts to show me a toad, the native community has clearly gone dormant for the colder months. It appears that I couldn't have found any better success anywhere else in the nation – all the patrol groups I contact clarify that it's very difficult at this season.
This team anticipates assisting around ten thousand mature toads over the street
One email I get from a different helper, who has kindly taken the trouble to check for toads in a famous site, thought to be the largest accurately monitored toad group in the UK, reaches me with the subject line: "No toads." However, in late winter, he informs me, the group plans to assist approximately 10,000 mature amphibians over the street.
Effectiveness and Challenges
How much of a difference can these groups truly achieve? "The fact that volunteers are performing this consistently on cold, damp and unpleasant late nights is remarkable," notes an expert. "That's something that very much should be celebrated." However, while rescue teams are able to reduce the drop, they can't stop it completely – not least because traffic is not the only threat.
Additional Threats
The climate crisis has meant extended spells of drought, which cause the wrong conditions for some of the animals that toads consume, such as invertebrates, while warmer ponds have led to an rise of toxic plants, which can be toxic to toads. Milder winters also cause toads to emerge from their hibernation more often, disrupting the energy conservation vital to their life cycle. Loss of environment – particularly the loss of big water bodies – is another menace.
Researchers are "always a bit worried about putting too much of a utilitarian spin on biodiversity," however "There is a big value in just their presence." But toads do have an significant part in the ecosystem, eating pretty much any invertebrates or small animals they can swallow and in turn sustaining a number of predators, such as hedgehogs and otters. Enhancing situations for toads – ie building water habitats, conserving woodland and installing amphibian passages – "we'll improve them for a whole bunch of other species."
Cultural Significance
Another reason to work to preserve toads around is their "important cultural value," notes an expert. Myths and folklore around toads go back {centuries|hundred