Can Britain's Toads Survive from Roads and Population Collapse?

It's Friday evening at half past seven, but instead of heading to the pub or watching a film, I've taken a train to a market town in the countryside to meet up with volunteers from a amphibian rescue group. These dedicated individuals give up their nights to protect the native amphibian community.

A Worrying Decline in Population

The common toad is becoming increasingly rare. A recent study led by an wildlife conservation group showed that the British common toad numbers have almost halved since 1985. Observing a creature that has been a stalwart of the British countryside in decrease is labeled "worrying" by researchers. Toads "don't require very specific conditions" and "should be able to live successfully in most of areas in the UK," meaning if even they are not managing to survive, "it indicates that the ecosystem is unbalanced."

Since 1985, Britain's toad numbers have nearly been cut in half

The Threat from Roads

Though the study didn't examine the reasons for the decline, traffic is a major factor. Estimates suggest that 20 tonnes of toads are crushed on UK roads every year – that is, several hundred thousand. In contrast to frogs, which might be happy to mate "if you left out a small container," toads favor big bodies of water. Their capacity to stay out of water for longer than frogs means they can journey farther to find them – often hundreds of metres. They usually stick to their traditional paths – it's common for adult toads to go back to their birth pond to mate.

Breeding Habits

Appropriately enough, the initial amphibians start their journey for a mate around February 14th, but some move as late as April, waiting until it gets dark and moving through the night. During that period, toads begin migrating from where they have been hibernating "all pretty much at the same time."

One volunteer, who grew up in the region and has been trying to protect its amphibians since he was a boy, explains that "They've got just one focus: to go and have an orgy." If their path happens to a street, they could all get run over, and that mating period would be lost – stopping a new generation of toads from being produced.

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 across the UK – 274 groups are currently registered with a national initiative. These teams pick up toads and transport them over streets in containers, as well as recording the quantity of toads they encounter and advocating for other safety solutions, such as blocked roads and amphibian passages.

Volunteers usually work during the migration season, when amphibian movements are frequent. However, this implies they can miss numbers of young toads, which, having existed as spawn and then tadpoles, leave their ponds over an irregular timetable in the end of summer. Because of their size – just one or two centimetres wide – "they are destroyed by car traffic." And as being run over "essentially crushes them," it's more difficult to collect information on them. At least when mature amphibians are lost, their remains can be counted.

Annual Work

Unlike many groups, one local team, who are in their eighth season of functioning, go out year-round – not every night, but when conditions are damp, or if someone has posted about a amphibian spotting in their group chat. When I request to accompany them on patrol, they concede it is "not ideal conditions" – winter dormancy has begun and it's been a arid period – but several of the helpers willingly accept to walk up and down 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, indicating her 14-year-old son and the experienced member. We've been out for two hours without a single toad sighting, and now they have scaled a wire barrier to check under some logs.

Family Involvement

The mother and son joined the group a while back. The teenager adores all things nature-related and has an goal to become a environmentalist, so his mother started to search for things they could do jointly to protect native animals. Now she enjoys it as much as he does, the middle-aged small business owner explains – so when the group was seeking a new manager lately, she decided to step up.

The teenager, too, has played an important role in the organization. A clip he created, imploring the municipal authority to close a street through a nature reserve during breeding time, influenced the outcome the team's way. After a twelve months of lobbying, the council approved an "access-only" restriction between evening and morning from late winter through to spring. Most drivers respected and avoided the route.

Other Wildlife and Difficulties

Several vehicles go past when I'm out on duty and we find some casualties as a result – no toads, but three squashed newts. We spot one live amphibian as well, and the teenager is particularly pleased to see a harvestman, which moves in his hands. Yet despite the group's hardest attempts to show me a toad, the native community has clearly settled down for the winter. It seems that I couldn't have found any more luck anywhere else in the nation – all the patrol groups I contact 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 another volunteer, who has kindly made the effort to look for toads in a famous site, considered the biggest tracked toad group in the UK, reaches me with the subject line: "No toads." However, in February and March, he informs me, the group expects to help around ten thousand mature amphibians over the street.

Impact and Limitations

How much of a difference can these groups truly achieve? "The fact that volunteers are doing this regularly on cold, damp and unpleasant late nights is remarkable," says an researcher. "This effort that very much should be celebrated." However, while toad patrols are able to reduce the drop, they cannot prevent it entirely – not least because vehicles 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 invertebrates, while higher water temperatures have led to an increase of toxic plants, which can be toxic to toads. Milder winters also lead toads to emerge from their hibernation more often, disrupting the energy conservation vital to their life cycle. Habitat destruction – particularly the disappearance of large ponds – is an additional threat.

Experts are "always a bit worried about putting too much of a utilitarian spin on wildlife," but "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 tiny organisms they can swallow and in turn feeding a variety of predators, such as wildlife. Improving conditions for toads – such as building water habitats, conserving woodland and installing toad tunnels – "we'll improve them for a whole bunch of additional wildlife."

Historical Importance

Another reason to work to preserve toads around is their "historical significance," adds an specialist. Myths and folklore around toads date back {centuries|hundred

David Boyd
David Boyd

A cybersecurity specialist with over a decade of experience in network defense and threat analysis, passionate about sharing practical security solutions.