Will Britain's Common Toads Survive from Roads and Population Collapse?
It is Friday evening at 7:30, but rather than heading to the pub or watching a film, I've taken a train to a town in the countryside to join volunteers from a toad patrol. These dedicated individuals sacrifice their evenings to safeguard the native amphibian community.
A Worrying Drop in Population
The Bufo bufo is becoming increasingly rare. A recent study conducted by an amphibian and reptile charity revealed that the UK toad population have almost halved since 1985. Observing a creature that has been a fixture of the UK landscape in decline is described as "concerning" by researchers. Toads "don't require 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 the ecosystem is unbalanced."
The UK toad population has almost halved since 1985
The Threat from Traffic
Though the study didn't cover the causes for the drop, cars certainly plays a part. Estimates suggest that 20 tonnes of toads are crushed on UK roads annually – that is, hundreds of thousands. In contrast to frogs, which might be content to mate "if you left out a bucket of water," toads prefer large ponds. Their capacity to remain away from water for more time than frogs means they can journey farther to find them – often hundreds of metres. They usually follow their ancestral migration routes – it's typical for mature amphibians to go back to their birth pond to mate.
Migration Habits
Appropriately enough, the initial amphibians begin their quest for a mate around Valentine's day, but others travel as far as April, until it gets dark and travelling through the night. During that time, toads start moving 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 toad population since he was a child, explains that "They've got just one focus: to go and have an orgy." If their route crosses a street, they could all get run over, and that mating period would never happen – preventing a new generation of toads from being produced.
Toad Patrols Across the UK
Seeing many of toad carcasses on local roads "resonates deeply with people," and has resulted in the creation of toad patrols across the UK – 274 groups are officially listed with a countrywide program. These teams collect toads and transport them across roads in containers, as well as recording the number of toads they find and advocating for other safety solutions, such as road closures and underground wildlife tunnels.
Volunteers tend to operate during the breeding period, when amphibian movements are more regular. However, this means they can overlook numbers of toadlets, which, having been eggs and then juveniles, leave their water habitats over an unpredictable schedule in the end of summer. Because of their size – just one or two centimetres wide – "they are destroyed by vehicles." And as being hit "essentially crushes them," it's more difficult to get data on them. At least when mature amphibians are killed, their carcasses can be tallied.
Year-Round Work
In contrast to most patrols, one local team, who are in their eighth season of operating, go out throughout the year – not nightly, but whenever conditions are damp, or if someone has reported about a amphibian spotting in their messaging app. When I ask to join them on duty, they admit it is "not ideal conditions" – toad hibernation season has begun and it's been a dry day – but several of the volunteers willingly accept to patrol their route with me and see what we can find. "If anyone can find any toads tonight, those two will spot one," says the patrol manager, pointing to her teenage child and the longtime volunteer. After for 120 minutes without a glimpse of any amphibians, and now they have scaled a barbed wire fence to check under some logs.
Family Participation
The family duo joined the group a year and a half ago. The teenager loves all things wildlife and has an ambition to become a environmentalist, so his parent started to search for things they could do together to protect native animals. Now she enjoys it as much as he does, the 41-year-old small business owner explains – so when the group was looking for a fresh coordinator recently, she decided to step up.
The teenager, too, has played an important role in the organization. A video he created, imploring the municipal authority to close a street through a nature reserve during migration season, swung the decision the team's way. After a twelve months of lobbying, the authority agreed to an "restricted access" rule between 5pm and 5am from late winter through to spring. The majority of motorists duly avoided the route.
Other Wildlife and Challenges
A few vehicles go past when I'm out on duty and we discover some victims as a result – no toads, but three squashed newts. We spot one living newt as well, and the youngster is particularly pleased to see a harvestman, which dances in his hands. 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 wouldn't have had any more luck elsewhere in the nation – all the patrol groups I contact clarify that it's very difficult at this season.
They project rescuing nearly 10,000 grown amphibians during migration
One email I get from another volunteer, who has generously made the effort to look for toads in a famous site, thought to be the largest accurately monitored toad group in the UK, reaches me with the title: "No toads." However, in late winter, he informs me, the group expects to help approximately 10,000 adult toads over the street.
Impact and Challenges
What level of impact can these organizations truly achieve? "The fact that people are doing this regularly on chilly, wet and miserable evenings is quite extraordinary," notes an researcher. "That's something that very much deserves recognition." However, while rescue teams are able to reduce the drop, they cannot prevent it entirely – not least because traffic is just one danger.
Other Dangers
The climate crisis has resulted in longer periods of dry weather, which create the poor environment for some of the animals that toads consume, such as invertebrates, while warmer ponds have caused an rise of toxic plants, which can be toxic to toads. Warmer cold seasons also lead toads to wake up from their hibernation more frequently, interfering with the energy conservation vital to their life cycle. Loss of environment – particularly the disappearance of large ponds – is another menace.
Experts are "often concerned about overemphasizing practical benefits on wildlife," however "There is a big value in just having these animals around." But toads do have an significant part in the food chain, consuming almost any invertebrates or small animals they can fit in their mouths and in turn sustaining a number of birds and mammals, such as hedgehogs and otters. Improving conditions for toads – ie building water habitats, conserving woodland and constructing toad tunnels – "we'll improve them for a wide range of additional wildlife."
Historical Significance
An additional motive to work to preserve toads present is their "historical significance," adds an expert. Myths and folklore around toads date back {centuries|hundred