Can Britain's Toads Be Saved from Traffic and Population Collapse?
It is Friday night at half past seven, but rather than going out or relaxing at home, I've taken a train to a market town in Wiltshire to meet up with volunteers from a amphibian rescue group. These dedicated individuals sacrifice their evenings to protect the native amphibian community.
A Worrying Decline in Population
The Bufo bufo is becoming increasingly uncommon. A latest study conducted by an amphibian and reptile charity showed that the British common toad numbers have almost halved since the mid-1980s. Observing a creature that has been a stalwart of the British countryside in decrease is described as "concerning" by experts. Toads "don't need very specific conditions" and "ought to live successfully in most of areas in Britain," so if even they are struggling to persist, "it kind of suggests that the ecosystem is unbalanced."
Since 1985, Britain's toad numbers have nearly been cut in half
The Danger from Roads
Though the study didn't examine the causes for the decline, traffic certainly plays a part. Estimates suggest that 20 tonnes of toads are killed on UK roads every year – that is, several hundred thousand. In contrast to frogs, which might be happy to mate "with just a small container," toads prefer large ponds. Their capacity to remain away from water for more time than frogs allows they can journey farther to find them – sometimes long distances. They tend to stick to their traditional paths – it's common for mature amphibians to go back to their birth pond to mate.
Breeding Patterns
Fittingly, the initial amphibians begin their quest for a mate around Valentine's day, but others travel as far as April, until it gets night and travelling through the night. During that period, toads begin migrating from where they have been overwintering "all pretty much at the same time."
One volunteer, who grew up in the region and has been working to save its toad population since he was a child, explains that "Their sole purpose: to go and mate." If their route happens to a road, they could all get run over, and that mating period would be lost – preventing a new generation of toads from being produced.
Rescue Groups Throughout the UK
Finding hundreds of toad carcasses on nearby streets "resonates deeply with people," and has resulted in the creation of rescue teams throughout the UK – 274 groups are currently registered with a national initiative. These teams collect toads and transport them over streets in containers, as well as counting the number of toads they find and advocating for other safety solutions, such as blocked roads and amphibian passages.
Volunteers usually work during the migration season, when toad crossings are frequent. However, this implies they can overlook numbers of toadlets, which, having existed as spawn and then tadpoles, leave their water habitats over an unpredictable schedule in the end of summer. Because of their small stature – just one or two centimetres wide – "they can get obliterated by car traffic." And as being hit "essentially crushes them," it's more difficult to collect information on them. At least when adult toads are lost, their carcasses can be tallied.
Annual Work
In contrast to most patrols, a specific volunteer group, who are in their eighth year of functioning, go out year-round – not every night, but whenever conditions are warm and wet, or if a member has posted about a amphibian spotting in their messaging app. When I ask to join them on patrol, they concede it is "not ideal conditions" – toad hibernation season has begun and it's been a dry day – but several of the volunteers gamely agree to walk up and down their area with me and search for any toads. "If anyone can locate any toads tonight, those two will spot one," says the group coordinator, pointing to her 14-year-old son and the longtime volunteer. After for two hours without a single toad sighting, and now they have climbed over a wire barrier to inspect beneath some wood.
Family Involvement
The mother and son joined the patrol a year and a half ago. The youngster loves all things wildlife and has an goal to become a environmentalist, so his parent started to look for activities they could do jointly to protect native animals. Now she loves it as much as he does, the middle-aged small business owner tells me – so when the team was seeking a fresh coordinator recently, she volunteered for the role.
The youth, too, has played an important role in the organization. A clip he made, imploring the local council to close a street through a protected area during migration season, influenced the outcome the group's way. After a twelve months of campaigning, the council agreed to an "restricted access" restriction between evening and morning from February through to spring. The majority of motorists respected and avoided the road.
Other Wildlife and Challenges
Several cars go past 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 especially excited to see a daddy longlegs, which dances in his hands. Yet despite the team's hardest attempts to let me see a toad, the local population has clearly settled down 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 near-impossible at this season.
They project rescuing nearly 10,000 grown amphibians during migration
One email I get from a different helper, who has kindly taken the trouble to check for toads in a noted location, thought to be 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 10,000 adult toads over the street.
Impact and Challenges
How much of a difference can these organizations actually make? "The reality that volunteers are doing this consistently on cold, damp and unpleasant evenings is remarkable," notes an researcher. "This effort that very much deserves recognition." However, while toad patrols 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 drought, which cause the wrong conditions for some of the creatures that toads consume, such as worms and slugs, while warmer ponds have caused an rise of blue-green algae, which can be toxic to toads. Milder winters also cause toads to emerge from their dormancy more often, interfering with the resource preservation vital to their life cycle. Habitat destruction – particularly the loss of big water bodies – is another menace.
Experts are "often concerned about overemphasizing practical benefits on biodiversity," however "There is a big value in just having these animals around." But toads do have an important role in the food chain, consuming almost any small creatures 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 situations for toads – such as creating more ponds, conserving woodland and constructing toad tunnels – "benefits for a wide range of other species."
Historical Significance
Another reason to try to keep toads present is their "historical significance," notes an specialist. Myths and folklore around toads date back {centuries|hundred