Can Britain's Common Toads Survive from Roads and Population Collapse?
It is a Friday evening at 7:30, but instead of going out or relaxing at home, I've caught a train to a market town in the countryside to meet up with volunteers from a toad patrol. These committed people sacrifice their evenings to protect the native amphibian community.
A Worrying Decline in Population
The Bufo bufo is becoming increasingly rare. A recent study led by an amphibian and reptile charity showed that the UK toad population have dropped by half since the mid-1980s. Observing a species that has been a fixture of the British countryside in decline is described as "worrying" by experts. Toads "don't require very specific conditions" and "should be able to live quite well in most of areas in Britain," meaning if even they are not managing to survive, "it kind of suggests that the ecosystem is unbalanced."
The UK toad population has almost halved since 1985
The Threat from Roads
Though the study didn't examine the reasons for the drop, traffic certainly plays a part. Estimates suggest that 20 tons of toads are crushed on UK roads every year β that is, several hundred thousand. In contrast to frogs, which would probably be happy to mate "with just a small container," toads favor big bodies of water. Their capacity to remain away from water for more time than frogs allows they can travel further to find them β sometimes long distances. They tend to stick to their ancestral migration routes β it's typical for adult toads to return to their birth pond to mate.
Migration Patterns
Fittingly, the initial amphibians begin their quest for a partner around February 14th, but others travel as late as April, waiting until it gets dark and travelling through the night. During that period, toads begin migrating from wherever they have been hibernating "all pretty much at the same time."
A local helper, who was raised in the region and has been trying to protect its amphibians since he was a child, explains that "They've got just one focus: to go and have an orgy." If their path happens to a road, they could all get run over, and that mating period would never happen β stopping a new generation of toads from being produced.
Rescue Groups Throughout the United Kingdom
Finding hundreds of toad carcasses on nearby streets "resonates deeply with people," and has resulted in the formation of rescue teams throughout the UK β 274 groups are currently registered with a countrywide program. These teams collect toads and transport them across roads in buckets, as well as recording the quantity of toads they find and lobbying for other protection measures, such as road closures and amphibian passages.
Patrols usually work during the breeding period, when amphibian movements are frequent. However, this means they can miss numbers of toadlets, which, having been eggs and then juveniles, leave their ponds over an irregular timetable in late summer. Because of their small stature β just one or two centimetres wide β "they can get obliterated by vehicles." And as being hit "essentially crushes them," it's harder to get data on them. At least when adult toads are killed, their carcasses can be counted.
Annual Work
In contrast to many groups, one local team, who are in their eighth year of functioning, go out throughout the year β not nightly, but when conditions are warm and wet, or if a member has reported about a amphibian spotting in their group chat. When I request to accompany them on patrol, they concede it is "not ideal conditions" β winter dormancy has begun and it's been a dry day β but several of the volunteers gamely agree to patrol their area with me and see what we can find. "If anyone can locate any toads tonight, that pair will spot one," says the group coordinator, indicating her teenage child 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.
Community Involvement
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 mother started to search for activities they could do together to help native animals. Now she enjoys it as much as he does, the middle-aged entrepreneur explains β so when the team was looking for a fresh coordinator recently, she volunteered for the role.
The teenager, too, has played an important role in the organization. A clip 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 twelve months of lobbying, the council agreed to an "restricted access" rule between evening and morning from late winter through to April. Most drivers respected and avoided the route.
Additional Species and Difficulties
A few vehicles go by when I'm out on duty and we discover some victims as a consequence β no toads, but several crushed salamanders. We spot one live amphibian as well, and the youngster is especially excited to see a daddy longlegs, which dances in his hands. Yet despite the group's best efforts to let me see a toad, the local population has clearly gone dormant for the winter. It seems that I wouldn't have had any more luck elsewhere in the country β all the rescue teams I contact clarify that it's very difficult at this season.
The group expects to help approximately 10,000 adult toads across the road
One email I get from a different helper, who has generously made the effort to check for toads in a noted location, considered the biggest tracked toad population in the UK, arrives in my inbox with the title: "No toads." However, in late winter, he tells me, the group plans to assist approximately ten thousand adult toads over the street.
Impact and Limitations
What level of impact can these groups truly achieve? "The reality that people are performing this regularly on cold, damp and unpleasant evenings is remarkable," notes an researcher. "This effort that very much deserves recognition." However, while rescue teams are able to reduce the drop, they cannot prevent it entirely β not least because vehicles is just one danger.
Additional Threats
The climate crisis has resulted in extended spells of drought, which create the poor environment for some of the creatures that toads consume, such as worms and slugs, while higher water temperatures have caused an rise of toxic plants, which can be harmful to toads. Warmer cold seasons also cause toads to emerge from their hibernation more often, interfering with the resource preservation vital to their life cycle. Habitat destruction β particularly the disappearance of big water bodies β is an additional threat.
Experts are "always a bit worried about putting too much of a utilitarian spin on wildlife," but "It's important in just having these animals around." But toads do have an important role in the food chain, consuming pretty much any small creatures or small animals they can swallow and in turn sustaining a number of predators, such as wildlife. Enhancing situations for toads β such as building water habitats, protecting forests and constructing amphibian passages β "we'll improve them for a whole bunch of additional wildlife."
Historical Significance
An additional motive to try to keep toads present is their "historical significance," notes an specialist. Legends and tales around toads go back {centuries|hundred