Can the UK's Common Toads Survive from Traffic and Population Collapse?
It is Friday night at half past seven, but instead of going out or relaxing at home, I've caught a train to a town in the countryside to meet up with volunteers from a amphibian rescue group. These committed people give up their evenings to protect the local toad population.
An Alarming Decline in Numbers
The Bufo bufo is growing more rare. A recent research conducted by an amphibian and reptile charity revealed that the British common toad numbers have almost halved since 1985. Observing a species that has been a stalwart of the UK landscape in decline is labeled "worrying" by researchers. Toads "don't require very particular environments" and "should be able to live successfully in most of habitats in Britain," meaning if even they are struggling to persist, "it indicates that things are not as they should be."
Since 1985, Britain's toad numbers have nearly been cut in half
The Threat from Traffic
Though the study didn't examine the reasons for the drop, cars certainly plays a part. Calculations indicate that 20 tonnes of toads are killed on UK roads annually – in other words, hundreds of thousands. Unlike frogs, which might be content to mate "if you left out a small container," toads favor large ponds. Their capacity to remain away from water for longer than frogs means they can travel further to reach them – sometimes long distances. They tend to follow their traditional paths – it's typical for mature amphibians to go back to their natal pond to mate.
Breeding Patterns
Fittingly, the first toads start their journey for a partner around February 14th, but others travel as late as April, waiting until it gets night and travelling after sunset. During that time, toads start moving from wherever they have been overwintering "almost simultaneously."
One volunteer, who was raised in the area and has been working to save its amphibians since he was a boy, explains that "Their sole purpose: to go and have an orgy." If their route crosses a street, they could be killed by traffic, and that breeding season would be lost – preventing a new generation of toads from being born.
Toad Patrols Across the United Kingdom
Seeing many of toad carcasses on local roads "inherently strikes a chord with people," and has resulted in the creation of toad patrols throughout the UK – hundreds of organizations are currently registered with a countrywide program. These groups pick up toads and carry them across roads in buckets, as well as counting the quantity of toads they encounter and advocating for other safety solutions, such as blocked roads and amphibian passages.
Patrols tend to operate during the breeding period, when toad crossings are frequent. However, this implies they can miss groups of young toads, which, having been eggs and then juveniles, leave their water habitats over an irregular timetable in late summer. Because of their small stature – just one or two centimetres wide – "they can get obliterated by car traffic." And as being hit "basically turns them into mush," it's more difficult to get data on them. At least when adult toads are lost, their remains can be counted.
Annual Work
Unlike most patrols, one local team, who are in their eighth season of operating, go out year-round – not every night, but when weather are warm and wet, or if someone has posted about a toad sighting in their group chat. When I request to accompany them on patrol, they admit it is "not a toady night" – winter dormancy has begun and it's been a arid period – but several of the volunteers gamely agree to walk up and down their area with me and search for any toads. "Should anyone can find any toads tonight, those two will spot one," says the patrol manager, pointing to her teenage child and the experienced member. After for 120 minutes without a single toad sighting, and now they have scaled a barbed wire fence to inspect beneath some logs.
Family Involvement
The family duo became part of the group a while back. The teenager adores all things wildlife and has an goal to become a environmentalist, so his parent started to look for activities they could do jointly to help native animals. Now she enjoys it as much as he does, the middle-aged entrepreneur tells me – so when the team was seeking a new manager lately, she volunteered for the role.
The youth, too, has been instrumental in the organization. A clip he made, imploring the local council to block a street through a protected area during migration season, influenced the outcome the group's way. After a year of campaigning, the authority agreed to an "restricted access" rule between 5pm and 5am from late winter through to spring. Most drivers duly avoided the route.
Other Wildlife and Difficulties
Several vehicles go by when I'm out on duty and we find some victims as a consequence – no toads, but several crushed salamanders. We spot one living newt as well, and the teenager is particularly pleased to see a daddy longlegs, which dances in his palms. Yet in spite of the group's best efforts to show me a toad, the native community has clearly gone dormant for the colder months. It seems that I wouldn't have had any better success elsewhere in the nation – all the rescue teams I reach out to explain that it's very difficult at this time of year.
The group expects to help approximately 10,000 adult toads across the road
One email I receive from a different helper, who has kindly taken the trouble to look for toads in a famous site, considered the biggest tracked toad population in the UK, reaches me with the subject line: "No toads." However, in February and March, he informs me, the team expects to help around 10,000 mature amphibians across the road.
Impact and Limitations
What level of impact can these groups actually make? "The fact that volunteers are doing this consistently on chilly, wet and miserable late nights is quite extraordinary," says an researcher. "That's something that very much should be celebrated." However, while rescue teams are able to reduce the drop, they can't stop it completely – partly since traffic is not the only threat.
Other Dangers
The climate crisis has meant extended spells of drought, which create the poor environment for some of the animals that toads eat, such as worms and slugs, while warmer ponds have caused an rise of toxic plants, which can be toxic to toads. Warmer cold seasons also cause toads to wake up from their dormancy more often, interfering with the energy conservation crucial to their life cycle. Loss of environment – particularly the disappearance of big water bodies – is another menace.
Researchers are "often concerned about putting too much of a utilitarian spin on wildlife," but "It's important in just their presence." But toads play an significant part in the food chain, eating almost any small creatures or small animals they can swallow and in turn feeding a number of predators, such as hedgehogs and otters. Enhancing conditions for toads – ie creating more ponds, conserving woodland and installing toad tunnels – "we'll improve them for a whole bunch of additional wildlife."
Cultural Significance
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