Can Britain's Toads Survive from Traffic and Population Collapse?
It's Friday evening at 7:30, but instead of going out or watching a film, I've caught a train to a market town in the countryside to join volunteers from a toad patrol. These committed people sacrifice their nights to safeguard the native amphibian community.
A Worrying Decline in Population
The Bufo bufo is growing more rare. A latest study led by an amphibian and reptile charity showed that the UK toad population have dropped by half since the mid-1980s. Seeing a species that has been a fixture of the UK landscape in decrease is described as "concerning" by researchers. Toads "don't need very specific conditions" and "should be able to live successfully in the majority of areas in the UK," so if even they are not managing to survive, "it indicates that the ecosystem is unbalanced."
The UK toad population has almost halved since 1985
The Threat from Traffic
Though the research didn't cover the causes for the drop, cars certainly plays a part. Calculations suggest that 20 tons of toads are killed on UK roads every year – that is, several hundred thousand. Unlike frogs, which might be content to mate "with just a bucket of water," toads prefer large ponds. Their ability to remain away from water for longer than frogs allows they can travel further to reach them – sometimes hundreds of metres. They tend to stick to their traditional paths – it's common for mature amphibians to go back to their natal pond to mate.
Migration Patterns
Fittingly, the initial amphibians start their journey for a mate around Valentine's day, but some move as late as April, waiting until it gets dark and moving after sunset. During that time, toads start moving from wherever they have been overwintering "almost simultaneously."
A local helper, who grew up in the area and has been trying to protect its toad population since he was a boy, notes that "Their sole purpose: to go and mate." If their route crosses a street, they could be killed by traffic, and that mating period would never happen – stopping a new generation of toads from being produced.
Rescue Groups Throughout the United Kingdom
Seeing hundreds of dead toads on local roads "inherently strikes a chord with people," and has led to the formation of rescue teams throughout the UK – hundreds of organizations are officially listed with a countrywide program. These groups collect toads and carry them over streets in buckets, as well as recording the quantity of toads they encounter and advocating for other protection measures, such as blocked roads and underground wildlife tunnels.
Volunteers tend to operate during the migration season, when amphibian movements are more regular. However, this implies they can overlook numbers of young toads, which, having existed as spawn and then juveniles, exit their ponds over an unpredictable schedule in late summer. Because of their size – just a couple of cm wide – "they are destroyed by car traffic." And as being hit "basically turns them into mush," it's harder to collect information on them. At least when mature amphibians are lost, their remains can be tallied.
Annual Work
Unlike many groups, a specific volunteer group, who are in their eighth season of functioning, go out throughout the year – not every night, but when weather are warm and wet, or if a member has reported about a toad sighting in their group chat. When I ask to join 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 helpers gamely agree to patrol their area with me and see what we can find. "Should anyone can locate any toads tonight, those two will find one," says the group coordinator, indicating her 14-year-old son and the experienced member. We've been out for 120 minutes without a single toad sighting, and now they have climbed over a wire barrier to check under some logs.
Family Participation
The family duo became part of the patrol a while back. The youngster adores all things nature-related and has an goal to become a conservationist, so his parent started to look for activities they could do together to help local wildlife. Now she loves it as much as he does, the 41-year-old entrepreneur tells me – so when the group was looking for a fresh coordinator recently, she decided to step up.
The youth, too, has played an important role in the organization. A video he created, urging the municipal authority to block a road through a nature reserve during breeding time, swung the decision the group's way. After a year of lobbying, the council agreed to an "restricted access" rule between 5pm and 5am from late winter through to April. Most drivers duly avoided the road.
Other Wildlife and Challenges
Several vehicles go past when I'm out on duty and we discover some victims as a result – no amphibians, but several crushed salamanders. We see one living newt as well, and the youngster is especially excited to see a harvestman, which dances in his hands. Yet despite the group's hardest attempts to let me see a toad, the local population has obviously gone dormant for the winter. It seems that I wouldn't have had any more luck elsewhere in the nation – all the rescue teams I reach out to explain that it's very difficult at this time of year.
The group expects to help approximately 10,000 adult toads across the road
A message I get from a different helper, who has kindly taken the trouble to check for toads in a famous site, considered the biggest tracked toad population in the UK, arrives in my inbox with the title: "No toads." However, in late winter, he informs me, the group plans to assist around ten thousand mature amphibians across the road.
Effectiveness and Limitations
How much of a difference can these groups actually make? "The reality that people are performing this regularly on chilly, wet and miserable evenings is remarkable," notes an expert. "This effort that very much should be celebrated." However, while rescue teams are able to slow the decline, they can't stop it completely – partly since vehicles is not the only threat.
Additional Threats
The climate crisis has resulted in longer periods of drought, which cause the wrong conditions for some of the creatures that toads eat, such as invertebrates, while warmer ponds have led to an increase of blue-green algae, which can be toxic to toads. Warmer cold seasons also cause toads to emerge from their hibernation more often, disrupting the energy conservation vital to their existence. Habitat destruction – especially the disappearance of big water bodies – is another menace.
Experts are "often concerned about putting too much of a utilitarian spin on wildlife," but "There is a big value in just their presence." But toads do have an significant part in the food chain, consuming pretty much any small creatures or small animals they can fit in their mouths and in turn sustaining a variety of birds and mammals, such as wildlife. Improving conditions for toads – ie building water habitats, protecting forests and constructing amphibian passages – "benefits for a wide range of additional wildlife."
Historical Importance
Another reason to try to keep toads around is their "important cultural value," adds an expert. Myths and folklore around toads date back {centuries|hundred