Can the UK's Common Toads Survive from Roads and Terrible Decline?
It is Friday evening at 7:30, but instead of heading to the pub or watching a film, I've caught a train to a market town in the countryside to join volunteers from a amphibian rescue group. These committed people sacrifice their evenings to protect the local toad population.
An Alarming Decline in Population
The Bufo bufo is growing more rare. A latest study led by an amphibian and reptile charity revealed that the British common toad numbers have dropped by half since 1985. Observing a species that has been a fixture of the UK landscape in decrease is labeled "worrying" by experts. Toads "don't require very particular environments" and "ought to live successfully in most of habitats in Britain," so if even they are struggling to persist, "it kind of suggests that things are not as they should be."
Since 1985, Britain's toad numbers have nearly been cut in half
The Threat from Roads
Though the research didn't cover the reasons for the decline, traffic is a major factor. Estimates suggest that 20 tonnes of toads are crushed on UK roads every year – in other words, several hundred thousand. In contrast to frogs, which might be content to mate "with just a bucket of water," toads prefer big bodies of water. Their capacity to remain away from water for more time than frogs means they can journey farther to find them – often long distances. They tend to follow their ancestral migration routes – it's typical for mature amphibians to go back to their birth pond to mate.
Migration Patterns
Fittingly, the first toads start their journey for a partner around February 14th, but some move as far as April, until it gets night and travelling after sunset. During that time, toads start moving from where they have been hibernating "almost simultaneously."
One volunteer, who was raised in the region and has been trying to protect its toad population since he was a child, notes that "They've got just one focus: to go and mate." If their route crosses a road, they could be killed by traffic, and that mating period would be lost – stopping a new generation of toads from being born.
Rescue Groups Throughout the United Kingdom
Finding many of toad carcasses on local roads "resonates deeply with people," and has led to the creation of toad patrols across the UK – hundreds of organizations are currently registered with a countrywide program. These groups pick up toads and transport them over streets in buckets, as well as recording the number of toads they find and lobbying for other protection measures, such as road closures and amphibian passages.
Volunteers usually work during the breeding period, when toad crossings are frequent. However, this implies they can miss numbers of toadlets, which, having been eggs and then tadpoles, leave their water habitats over an irregular timetable in the end of summer. Because of their size – just a couple of cm wide – "they are destroyed by car traffic." And as being run over "essentially crushes them," it's harder to collect information on them. At least when adult toads are lost, their remains can be counted.
Annual Efforts
In contrast to many groups, a specific volunteer group, who are in their eighth year of operating, go out throughout the year – not nightly, but whenever weather are damp, or if someone has reported about a amphibian spotting in their messaging app. When I ask to join them on duty, they concede it is "not ideal conditions" – winter dormancy has begun and it's been a arid period – but several of the volunteers gamely agree to patrol their area with me and search for any toads. "If anyone can find any toads tonight, those two will spot one," says the patrol manager, pointing to her teenage child and the experienced member. We've been out for two hours without a single toad sighting, and now they have scaled a barbed wire fence to check under some logs.
Family Involvement
The family duo joined the patrol a year and a half ago. The youngster loves all things wildlife and has an goal to become a conservationist, so his mother started to search for activities they could do jointly to protect native animals. Now she loves it as much as he does, the 41-year-old entrepreneur tells me – so when the group was looking for a new manager lately, she volunteered for the role.
The youth, too, has been instrumental in the organization. A clip he created, urging the local council to close a road through a protected area during breeding time, swung the decision the group's way. After a year of campaigning, the authority agreed to an "restricted access" rule between evening and morning from February through to April. Most drivers duly avoided the road.
Additional Species and Difficulties
Several cars go by when I'm out on duty and we find some victims as a consequence – no amphibians, but several crushed salamanders. We see one living newt as well, and the youngster is particularly pleased to see a daddy longlegs, which moves in his palms. Yet in spite of the team's best efforts to show me a toad, the native community has clearly gone dormant for the colder months. It seems that I couldn't have found any more luck anywhere else in the nation – all the patrol groups I reach out to clarify that it's very difficult at this time of year.
They project rescuing nearly 10,000 grown amphibians during migration
One email I get from a different helper, who has generously taken the trouble to check for toads in a noted location, considered the largest accurately monitored toad population in the UK, arrives in my inbox with the subject line: "No toads." However, in February and March, he tells me, the group plans to assist approximately ten thousand adult toads across the road.
Effectiveness and Limitations
How much of a difference can these groups actually make? "The fact that volunteers are performing this regularly on chilly, wet and miserable late nights is remarkable," notes an researcher. "That's something that very much deserves recognition." However, while toad patrols are able to slow the decline, they can't stop it completely – partly since vehicles is just one danger.
Other Dangers
The climate crisis has meant longer periods of drought, which create the poor environment for some of the creatures that toads eat, such as worms and slugs, while higher water temperatures have led to an rise of toxic plants, which can be harmful to toads. Warmer cold seasons also cause toads to wake up from their dormancy more frequently, disrupting the resource preservation crucial to their existence. Habitat destruction – especially the disappearance of big water bodies – is an additional threat.
Experts are "often concerned about putting too much of a utilitarian spin on biodiversity," but "There is a big value in just having these animals around." But toads play an important role in the food chain, consuming pretty much any invertebrates or small animals they can swallow and in turn feeding a number of predators, such as hedgehogs and otters. Improving situations for toads – ie creating more ponds, conserving woodland and constructing amphibian passages – "benefits for a wide range of other species."
Historical Significance
Another reason to try to keep toads present is their "important cultural value," adds an expert. Myths and folklore around toads date back {centuries|hundred