Will Britain's Common Toads Be Saved from Roads and Population Collapse?
It is a Friday evening at 7:30, but rather than going out or relaxing at home, I've caught a train to a market town in Wiltshire to join local helpers from a toad patrol. These dedicated individuals sacrifice their evenings to safeguard the native amphibian community.
A Worrying Decline in Numbers
The common toad is growing more rare. A recent research led by an amphibian and reptile charity showed that the UK toad population have almost halved since 1985. Seeing a creature that has been a stalwart of the British countryside in decline is described as "concerning" by researchers. Toads "don't need very particular environments" and "ought to live quite well in the majority of areas in Britain," so if even they are not managing to survive, "it indicates that the ecosystem is unbalanced."
Toad populations across the UK have declined by almost 50% since the 1980s
The Threat from Traffic
Though the study didn't examine the causes for the decline, traffic is a major factor. Calculations indicate that 20 tonnes of toads are crushed on British roads annually – that is, hundreds of thousands. In contrast to frogs, which might be happy to mate "with just a bucket of water," toads prefer big bodies of water. Their capacity to stay out of water for longer than frogs allows they can journey farther to reach them – often long distances. They usually follow their traditional paths – it's common for mature amphibians to return to their birth pond to mate.
Migration Habits
Appropriately enough, the first toads start their journey for a mate around February 14th, but some move as late as April, waiting until it gets dark and moving through the night. During that time, toads start moving from where they have been overwintering "almost simultaneously."
A local helper, who was raised in the region and has been working to save its amphibians since he was a boy, explains that "Their sole purpose: to go and mate." If their path crosses a street, they could be killed by traffic, and that breeding season would be lost – preventing a new generation of toads from being produced.
Rescue Groups Across the United Kingdom
Seeing hundreds of dead toads on nearby streets "resonates deeply with people," and has led to the formation of rescue teams across the UK – hundreds of organizations are currently registered with a national initiative. These teams collect toads and carry them across roads in buckets, as well as counting the number of toads they find and advocating for other protection measures, such as blocked roads and amphibian passages.
Patrols tend to operate during the migration season, when toad crossings are frequent. However, this means they can overlook numbers of toadlets, which, having been spawn and then tadpoles, exit their ponds over an irregular timetable in late summer. Because of their small stature – just a couple of cm wide – "they can get obliterated by vehicles." And as being hit "essentially crushes them," it's harder to collect information on them. At least when adult toads are killed, their remains can be counted.
Annual Efforts
Unlike most patrols, a specific volunteer group, who are in their eighth year of operating, go out year-round – not nightly, but when weather are warm and wet, or if a member has reported about a toad sighting in their messaging app. When I request to accompany them on duty, they concede it is "not ideal conditions" – toad hibernation season has started and it's been a dry day – but several of the volunteers willingly accept to walk up and down their route with me and see what we can find. "If anyone can locate any toads tonight, that pair will find one," says the patrol manager, pointing to her teenage child and the experienced member. We've been out for 120 minutes without a single toad sighting, and now they have scaled a barbed wire fence to check under some logs.
Family Participation
The mother and son joined the patrol a year and a half ago. The youngster adores all things wildlife and has an ambition to become a conservationist, so his mother started to look for activities they could do together to protect local wildlife. Now she enjoys it as much as he does, the 41-year-old entrepreneur tells me – so when the team was looking for a fresh coordinator recently, she decided to step up.
The youth, too, has been instrumental in the organization. A video he made, urging the local council to close a street through a nature reserve during migration season, swung the decision the team's way. After a year of campaigning, the council agreed to an "restricted access" restriction between evening and morning from February through to April. The majority of motorists duly avoided the route.
Additional Species and Challenges
A few cars 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 live amphibian as well, and the youngster is particularly pleased to see a harvestman, which moves in his palms. Yet in spite of the group's hardest attempts to show me a toad, the local population has clearly settled down for the winter. It appears that I wouldn't have had any better success elsewhere in the country – all the patrol groups I reach out to clarify that it's very difficult at this season.
They project rescuing nearly 10,000 grown amphibians during migration
One email I receive from another volunteer, who has kindly made the effort to look for toads in a noted location, considered the largest accurately monitored toad group in the UK, arrives in my inbox with the subject line: "No toads." However, in late winter, he tells me, the group plans to assist approximately 10,000 mature amphibians across the road.
Effectiveness and Challenges
What level of impact can these groups truly achieve? "The fact that people are doing this regularly on cold, damp and unpleasant late nights is remarkable," says an researcher. "That's something that very much should be celebrated." However, while rescue teams are able to reduce the drop, they cannot prevent it entirely – partly since vehicles is just one danger.
Additional Threats
The climate crisis has resulted in longer periods of dry weather, which cause the wrong conditions for some of the creatures that toads consume, such as invertebrates, while warmer ponds have caused an increase of toxic plants, which can be toxic to toads. Warmer cold seasons also cause toads to wake up from their hibernation more often, interfering with the resource preservation crucial to their life cycle. Habitat destruction – particularly the disappearance of big water bodies – is another menace.
Researchers are "always a bit worried about putting too much of a utilitarian spin on biodiversity," but "There is a big value in just their presence." But toads do have an important role in the ecosystem, eating almost any invertebrates or tiny organisms they can swallow 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 toad tunnels – "we'll improve them for a wide range of additional wildlife."
Historical Significance
Another reason to work to preserve toads around is their "historical significance," adds an expert. Myths and folklore around toads date back {centuries|hundred