Will Britain's Common Toads Be Saved from Traffic and Population Collapse?
It's Friday evening at half past seven, but instead of heading to the pub or watching a film, I've caught a train to a town in the countryside to meet up with local helpers from a amphibian rescue group. These dedicated individuals sacrifice their evenings to protect the native amphibian community.
A Worrying Drop in Population
The Bufo bufo is becoming increasingly rare. A recent research led by an wildlife conservation group showed that the British common toad numbers have dropped by half since 1985. Seeing a creature that has been a fixture of the British countryside in decline is labeled "concerning" by researchers. Toads "don't require very particular environments" and "should be able to live quite well in most of habitats in Britain," so if even they are struggling to persist, "it indicates 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 cover the causes for the drop, traffic certainly plays a part. Calculations indicate that 20 tonnes of toads are crushed on British roads every year – that is, several hundred thousand. Unlike frogs, which would probably be happy to mate "with just a small container," toads prefer big bodies of water. Their capacity to stay out of water for more time than frogs means they can journey farther to find them – often long distances. They usually stick to their traditional paths – it's common for mature amphibians to return to their natal pond to mate.
Breeding Habits
Appropriately enough, the initial amphibians start their journey for a mate around February 14th, but others travel as far as April, waiting until it gets dark and travelling after sunset. During that period, toads start moving from where they have been overwintering "all pretty much at the same time."
A local helper, who was raised in the area and has been working to save its toad population since he was a boy, explains that "Their sole purpose: to go and mate." If their route happens to a street, they could all get run over, and that mating period would be lost – preventing a next generation of toads from being produced.
Rescue Groups Across the United Kingdom
Finding hundreds of toad carcasses on local roads "resonates deeply with people," and has led to the formation of toad patrols across the UK – hundreds of organizations are currently registered with a national initiative. These groups pick up toads and transport them across roads in containers, as well as recording the number of toads they find and advocating for other safety solutions, such as road closures and underground wildlife tunnels.
Volunteers usually work during the breeding period, when toad crossings are more regular. However, this implies they can overlook groups of young toads, which, having existed as eggs and then juveniles, exit their ponds over an irregular timetable in the end of summer. Because of their small stature – just a couple of cm wide – "they are destroyed by vehicles." And as being hit "basically turns them into mush," it's more difficult to get data on them. At least when mature amphibians are killed, their carcasses can be tallied.
Year-Round Efforts
In contrast to most patrols, one local team, who are in their eighth year of functioning, go out throughout the year – not nightly, but whenever weather are warm and wet, or if someone has reported about a amphibian spotting in their messaging app. When I ask to join them on duty, they admit it is "not ideal conditions" – winter dormancy has begun and it's been a arid period – but a few of the helpers willingly accept to walk up and down their route with me and search for any toads. "If anyone can find any toads tonight, that pair will find one," says the patrol manager, pointing to her 14-year-old son and the experienced member. After for two hours without a single toad sighting, and now they have climbed over a wire barrier to check under some wood.
Family Participation
The family duo joined the group a while back. The teenager loves all things wildlife and has an ambition to become a conservationist, so his mother started to look for things they could do together to protect native animals. Now she enjoys it as much as he does, the 41-year-old entrepreneur tells me – so when the team was looking for a fresh coordinator lately, she decided to step up.
The youth, too, has played an important role in the group. A video he created, imploring the local council to block a road through a protected area during breeding time, swung the decision the team's way. After a year of campaigning, the council approved an "restricted access" restriction between 5pm and 5am from February through to April. Most drivers duly avoided the route.
Additional Species and Difficulties
Several cars go past when I'm out on duty and we discover 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 moves in his hands. Yet in spite of the group's best efforts to show me a toad, the local population has obviously gone dormant for the colder months. It appears that I wouldn't have had any better success elsewhere in the nation – all the rescue teams I contact clarify that it's near-impossible at this season.
They project rescuing nearly 10,000 grown amphibians during migration
One email I receive from a different helper, who has generously taken the trouble to check for toads in a famous site, considered the largest accurately monitored toad group in the UK, arrives in my inbox with the title: "No toads." However, in late winter, he tells me, the team plans to assist around 10,000 adult toads across the road.
Effectiveness and Limitations
What level of impact can these groups actually make? "The fact that volunteers are doing this regularly on cold, damp and unpleasant evenings is quite extraordinary," notes an researcher. "This effort that very much deserves recognition." However, while toad patrols are able to slow the decline, they can't stop it completely – not least because traffic is not the only threat.
Additional Threats
The climate crisis has resulted in extended spells of dry weather, which create the wrong conditions for some of the animals that toads consume, such as worms and slugs, while warmer ponds have led to an increase 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 vital to their life cycle. Habitat destruction – particularly the disappearance of large ponds – is another menace.
Researchers are "often concerned about overemphasizing practical benefits on biodiversity," but "There is a big value in just having these animals around." But toads do have an important role in the ecosystem, eating pretty much any small creatures or tiny organisms they can swallow and in turn sustaining a variety of birds and mammals, such as hedgehogs and otters. Enhancing conditions for toads – such as creating more ponds, conserving woodland and constructing amphibian passages – "benefits for a whole bunch of other species."
Historical Importance
Another reason to work to preserve toads around is their "historical significance," adds an specialist. Legends and tales around toads date back {centuries|hundred