Will the UK's Toads Be Saved from Traffic and Population Collapse?
It's Friday night at half past seven, but instead of going out or relaxing at home, I've taken a train to a town in Wiltshire to join local helpers from a toad patrol. These dedicated individuals sacrifice their evenings to protect the native amphibian community.
An Alarming Decline in Population
The Bufo bufo is growing more rare. A recent study conducted by an amphibian and reptile charity showed that the British common toad numbers have almost halved since the mid-1980s. Seeing a species 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 successfully in the majority of areas in the UK," so if even they are struggling to persist, "it indicates that things are not as they should be."
The UK toad population has almost halved since 1985
The Danger from Traffic
Though the research didn't examine the causes for the drop, traffic certainly plays a part. Calculations suggest that 20 tons of toads are crushed on UK roads annually – in other words, hundreds of thousands. In contrast to frogs, which would probably be content to mate "if you left out a bucket of water," toads favor big bodies of water. Their capacity to remain away from water for more time than frogs means they can travel further to reach them – sometimes long distances. They usually stick to their traditional paths – it's common for adult toads to go back to their birth pond to mate.
Breeding Habits
Fittingly, the first toads start their journey for a partner around February 14th, but some move as far as spring, waiting until it gets dark and travelling through the night. During that time, toads start moving from where they have been hibernating "almost simultaneously."
A local helper, who was raised in the area and has been trying to protect its toad population since he was a boy, explains that "Their sole purpose: to go and mate." If their path happens to a road, they could all get run over, and that breeding season would be lost – preventing a next generation of toads from being born.
Rescue Groups Throughout the United Kingdom
Seeing many of toad carcasses on local roads "resonates deeply with people," and has resulted in the creation of toad patrols across the UK – hundreds of organizations are officially listed with a countrywide program. These teams collect toads and transport them over streets in containers, as well as recording the number of toads they find and advocating for other safety solutions, such as road closures and amphibian passages.
Patrols usually work during the migration season, when amphibian movements are frequent. However, this means they can miss groups of young toads, which, having been eggs and then juveniles, exit 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 "basically turns them into mush," it's more difficult to get data on them. At least when mature amphibians are lost, their carcasses can be tallied.
Year-Round Efforts
Unlike many groups, one local team, who are in their eighth year of functioning, go out throughout the year – not nightly, but when weather are damp, or if someone 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" – toad hibernation season has begun and it's been a dry day – but a few of the volunteers gamely agree to patrol their area 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 14-year-old son and the longtime volunteer. We've been out for 120 minutes without a single toad sighting, and now they have scaled a barbed wire fence to check under some logs.
Community Involvement
The mother and son became part of the patrol a while back. The teenager adores all things wildlife and has an goal to become a conservationist, so his parent started to look for activities they could do jointly to protect local wildlife. Now she enjoys it as much as he does, the middle-aged entrepreneur tells me – so when the group was looking for a fresh coordinator lately, she volunteered for the role.
The teenager, too, has been instrumental in the group. A clip he created, urging the municipal authority to close a road through a nature reserve during migration season, influenced the outcome the team's way. After a year of campaigning, the council agreed to an "restricted access" restriction between evening and morning from late winter through to April. Most drivers respected and avoided the road.
Additional Species and Difficulties
A few cars go by when I'm out on duty and we discover some casualties as a consequence – no toads, but several crushed salamanders. We see one live amphibian as well, and the teenager is especially excited to see a harvestman, which moves in his hands. Yet despite the group's best efforts to let me see a toad, the native community has obviously gone dormant for the winter. It appears that I couldn't have found any more luck elsewhere in the country – all the patrol groups 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 get from another volunteer, who has kindly taken the trouble to check for toads in a famous site, considered the largest accurately monitored toad population in the UK, arrives in my inbox with the subject line: "No toads." However, in late winter, he tells me, the team expects to help around 10,000 mature amphibians across the road.
Impact and Challenges
What level of impact can these organizations truly achieve? "The reality that volunteers are performing this consistently on cold, damp and unpleasant late nights is quite extraordinary," says 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 – partly since vehicles is not the only threat.
Other Dangers
The global warming has meant longer periods of dry weather, which cause the poor environment for some of the creatures that toads eat, such as invertebrates, while warmer ponds have caused an rise of blue-green algae, which can be toxic to toads. Warmer cold seasons also cause toads to wake up from their dormancy more frequently, interfering with the resource preservation crucial to their existence. Habitat destruction – especially the loss of big water bodies – is another menace.
Researchers are "always a bit worried about overemphasizing practical benefits on wildlife," but "There is a big value in just their presence." But toads play an important role in the ecosystem, consuming almost any invertebrates or tiny organisms they can swallow and in turn feeding a variety of predators, such as hedgehogs and otters. Enhancing situations for toads – ie building water habitats, conserving woodland and installing amphibian passages – "benefits for a whole bunch of additional wildlife."
Cultural Importance
An additional motive to work to preserve toads around is their "important cultural value," adds an specialist. Myths and folklore around toads date back {centuries|hundred