Will Britain's Common Toads Survive from Traffic and Terrible Decline?
It is Friday evening at 7:30, but rather than going out or relaxing at home, I've taken a train to a town in Wiltshire to join volunteers from a amphibian rescue group. These dedicated individuals sacrifice their nights to protect the native amphibian community.
A Worrying Decline in Numbers
The Bufo bufo is becoming increasingly uncommon. A recent research conducted by an amphibian and reptile charity showed that the British common toad numbers 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 particular environments" and "should be able to live quite well in most of areas in Britain," so 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 Danger from Roads
Though the study didn't cover the causes for the drop, cars certainly plays a part. Estimates suggest that 20 tons of toads are crushed on British roads every year – that is, hundreds of thousands. In contrast to frogs, which might be happy to mate "with just a bucket of water," toads favor large ponds. Their capacity to remain away from water for more time than frogs allows they can journey farther to reach them – sometimes long distances. They tend to follow their ancestral migration routes – it's common for mature amphibians to go back to their natal pond to mate.
Migration Patterns
Appropriately enough, the initial amphibians begin their quest for a partner around Valentine's day, but others travel as late as April, until it gets dark and moving after sunset. During that period, toads begin migrating from where they have been overwintering "all pretty much at the same time."
A local helper, who grew up in the region and has been working to save its amphibians since he was a boy, explains that "They've got just one focus: to go and have an orgy." If their path happens to a street, they could be killed by traffic, and that mating period would be lost – stopping a next generation of toads from being produced.
Toad Patrols Across the UK
Seeing hundreds of toad carcasses on local roads "resonates deeply with people," and has led to the creation of rescue teams across the UK – 274 groups are currently registered with a countrywide program. These teams collect toads and transport them over streets in buckets, as well as counting the number of toads they encounter and lobbying for other protection measures, such as blocked roads and amphibian passages.
Volunteers usually work during the migration season, when toad crossings are frequent. However, this means they can miss groups of toadlets, which, having existed as eggs and then tadpoles, leave their ponds over an unpredictable schedule in the end of summer. Because of their size – 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 killed, their remains can be tallied.
Year-Round Efforts
Unlike most patrols, a specific volunteer group, who are in their eighth season of functioning, go out year-round – not nightly, but when weather are warm and wet, or if a member has reported about a amphibian spotting in their group chat. When I ask to join them on duty, they admit it is "not ideal conditions" – winter dormancy has started and it's been a arid period – but several of the volunteers willingly accept to patrol their area with me and search for any toads. "If anyone can find any toads tonight, that pair will find one," says the patrol manager, indicating her teenage child and the experienced member. After for two hours without a single toad sighting, and now they have climbed over a wire barrier to check under some logs.
Family Involvement
The family duo became part of the patrol a year and a half ago. The teenager loves all things wildlife and has an ambition to become a environmentalist, so his mother started to search for things they could do jointly to protect native animals. Now she loves it as much as he does, the 41-year-old small business owner tells me – so when the team was looking for a fresh coordinator lately, she decided to step up.
The teenager, too, has been instrumental in the group. A video he made, urging the local council to close a road through a protected area during migration season, swung the decision the team's way. After a twelve months of lobbying, the council approved an "access-only" restriction between evening and morning from late winter through to spring. Most drivers duly avoided the route.
Other Wildlife and Challenges
Several vehicles go by when I'm out on patrol and we find some casualties as a result – no toads, but several crushed salamanders. We see one living newt as well, and the teenager is especially excited to see a daddy longlegs, which moves in his hands. Yet despite the group's best efforts to show me a toad, the native community has obviously settled down for the winter. It seems that I couldn't have found any better success anywhere else in the nation – all the patrol groups I reach out to clarify that it's near-impossible at this time of year.
They project rescuing nearly 10,000 grown amphibians during migration
One email I get from another volunteer, who has generously taken the trouble to check for toads in a noted location, thought to be 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 expects to help approximately 10,000 mature amphibians across the road.
Effectiveness and Challenges
What level of impact can these organizations truly achieve? "The reality that volunteers are performing this consistently on chilly, wet and miserable late nights is quite extraordinary," says 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 – not least because traffic is not the only threat.
Other Dangers
The climate crisis has resulted in longer periods of dry weather, which cause the poor environment for some of the animals that toads consume, such as worms and slugs, while warmer ponds have led to an increase of toxic plants, which can be harmful to toads. Warmer cold seasons also cause toads to wake up from their hibernation more frequently, disrupting the energy conservation crucial to their existence. Habitat destruction – particularly the disappearance of large ponds – is another menace.
Researchers are "often concerned about putting too much of a utilitarian spin on biodiversity," however "There is a big value in just having these animals around." But toads do have an significant part in the ecosystem, eating pretty much any small creatures or small animals they can swallow and in turn feeding a number of predators, such as wildlife. Enhancing situations for toads – such as building water habitats, protecting forests and installing toad tunnels – "benefits for a whole bunch of other species."
Cultural Importance
Another reason to work to preserve toads around is their "important cultural value," adds an expert. Myths and folklore around toads go back {centuries|hundred