Can Britain's Common Toads Survive from Traffic and Population Collapse?
It's a Friday evening at 7:30, but instead of going out or relaxing at home, I've caught a train to a market town in the countryside to meet up with volunteers from a toad patrol. These committed people sacrifice their nights to safeguard the local toad population.
An Alarming Decline in Numbers
The Bufo bufo is becoming increasingly rare. A latest research led by an wildlife conservation group revealed that the British common toad numbers have almost halved since the mid-1980s. Seeing a creature that has been a stalwart of the British countryside in decrease is described as "worrying" by researchers. Toads "don't need very specific conditions" and "should be able to live quite well in the majority of habitats in the UK," so if even they are not managing to survive, "it indicates that things are not as they should be."
Toad populations across the UK have declined by almost 50% since the 1980s
The Danger from Roads
Though the study didn't cover the causes for the decline, cars is a major factor. Calculations suggest that 20 tonnes of toads are crushed on UK roads every year – 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 prefer big bodies of water. Their capacity to stay out of water for longer than frogs allows they can journey farther to reach them – sometimes hundreds of metres. They tend to stick to their traditional paths – it's typical for adult toads to return to their natal pond to mate.
Breeding Patterns
Appropriately enough, the initial amphibians begin their quest for a partner around February 14th, but some move as late as spring, waiting until it gets night and moving after sunset. During that time, toads begin migrating from wherever they have been hibernating "all pretty much at the same time."
One volunteer, who was raised in the area 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 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 Across the United Kingdom
Finding many of toad carcasses on nearby streets "inherently strikes a chord with people," and has led to the creation of rescue teams across the UK – hundreds of organizations are currently registered with a national initiative. These teams pick up toads and transport them across roads in buckets, as well as counting the number of toads they find and advocating for other safety solutions, such as blocked roads and underground wildlife tunnels.
Patrols usually work during the breeding period, when amphibian movements are more regular. However, this implies they can overlook groups of toadlets, which, having been spawn and then juveniles, exit their ponds over an irregular timetable 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 hit "basically turns them into mush," it's harder to collect information on them. At least when mature amphibians are lost, their remains can be tallied.
Year-Round Work
In contrast to most patrols, one local team, who are in their eighth season of operating, go out year-round – not every night, but whenever weather are warm and wet, or if a member has reported about a toad sighting in their messaging app. When I request to accompany 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 willingly accept to walk up and down their route with me and see what we can find. "If anyone can locate any toads tonight, those two will spot one," says the patrol manager, pointing to her teenage child and the longtime volunteer. After for 120 minutes without a single toad sighting, and now they have climbed over a barbed wire fence to check under some logs.
Family Participation
The mother and son joined the group a while back. The youngster adores all things wildlife and has an goal to become a conservationist, so his mother started to look for things they could do jointly to protect local wildlife. Now she loves it as much as he does, the middle-aged small business owner tells me – so when the team was looking for a new manager lately, she volunteered for the role.
The youth, too, has been instrumental in the organization. A video he created, imploring the municipal authority to close a road through a nature reserve during migration season, swung the decision the group's way. After a twelve months of campaigning, the council approved an "access-only" rule between 5pm and 5am from February through to spring. Most drivers duly avoided the road.
Additional Species and Challenges
Several cars go past when I'm out on patrol and we discover some victims as a consequence – no amphibians, 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 hands. Yet despite the group's hardest attempts to show me a toad, the native community has obviously settled down for the winter. It seems that I wouldn't have had any more luck anywhere else in the country – all the patrol groups I contact 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 another volunteer, who has generously taken the trouble to look for toads in a noted location, thought to be the biggest tracked toad population in the UK, arrives in my inbox with the subject line: "None found." However, in late winter, he informs me, the team plans to assist approximately 10,000 adult toads over the street.
Effectiveness and Challenges
How much of a difference can these organizations truly achieve? "The fact that people are performing this consistently on chilly, wet and miserable late nights is remarkable," says an researcher. "That's something that very much deserves recognition." However, while toad patrols are able to reduce the drop, they can't stop it completely – not least because traffic is just one danger.
Additional Threats
The global warming has meant longer periods of dry weather, which create the wrong conditions for some of the animals that toads consume, such as invertebrates, while warmer ponds have caused an rise of toxic plants, which can be harmful to toads. Warmer cold seasons also cause toads to wake up from their hibernation more often, interfering with the energy conservation crucial to their life cycle. Habitat destruction – especially the loss of large ponds – is another menace.
Researchers are "always a bit worried about overemphasizing practical benefits on wildlife," but "It's important in just their presence." But toads do have an important role in the ecosystem, eating pretty much any invertebrates or tiny organisms they can fit in their mouths and in turn sustaining a variety of birds and mammals, such as hedgehogs and otters. Improving conditions for toads – ie creating more ponds, conserving woodland and constructing toad tunnels – "benefits for a whole bunch of additional wildlife."
Cultural Importance
An additional motive to work to preserve toads present is their "important cultural value," adds an specialist. Legends and tales around toads date back {centuries|hundred