Will the UK's Common Toads Survive from Traffic and Population Collapse?

It is a Friday evening at half past seven, but rather than heading to the pub or relaxing at home, I've caught a train to a town in Wiltshire to meet up with local helpers from a amphibian rescue group. These dedicated individuals sacrifice their evenings to safeguard the local toad population.

An Alarming Decline in Population

The common toad is growing more rare. A recent study led by an amphibian and reptile charity revealed that the UK toad population have dropped by half since the mid-1980s. Observing a creature that has been a stalwart of the British countryside in decline is labeled "concerning" by experts. Toads "don't need very specific conditions" and "should be able to live successfully in most of areas in the UK," so if even they are not managing to survive, "it kind of suggests 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 research didn't cover the reasons for the decline, cars certainly plays a part. Estimates suggest that 20 tons of toads are killed on UK roads annually – that is, hundreds of thousands. In contrast to frogs, which might be content to mate "with just a bucket of water," toads favor large ponds. Their capacity to stay out of water for more time than frogs means they can travel further to find them – sometimes hundreds of metres. They usually follow their traditional paths – it's common for mature amphibians to return to their birth pond to mate.

Breeding Habits

Fittingly, the first toads begin their quest for a mate around February 14th, but others travel as far as spring, until it gets dark and travelling after sunset. During that period, toads begin migrating from where they have been overwintering "almost simultaneously."

A local helper, who was raised in the region and has been trying to protect its toad population since he was a child, notes that "They've got just one focus: to go and mate." If their route happens to a street, they could be killed by traffic, and that breeding season would never happen – stopping a new generation of toads from being born.

Toad Patrols Across the UK

Finding many of toad carcasses on local roads "inherently strikes a chord with people," and has led to the creation of toad patrols throughout the UK – 274 groups are currently registered with a countrywide program. These groups pick up toads and transport them across roads in containers, as well as recording the quantity of toads they find and lobbying for other protection measures, such as blocked roads and underground wildlife tunnels.

Patrols usually work during the migration season, when toad crossings are frequent. However, this implies they can miss groups of young toads, which, having been eggs and then juveniles, exit their water habitats over an irregular timetable in late 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 collect information on them. At least when mature amphibians are lost, their remains can be counted.

Year-Round Efforts

In contrast to most patrols, a specific volunteer group, who are in their eighth year of functioning, go out throughout the year – not every night, but when conditions are warm and wet, or if someone has reported about a amphibian spotting in their messaging app. When I request to accompany them on patrol, they admit it is "not ideal conditions" – toad hibernation season has started and it's been a dry day – but several of the volunteers willingly accept to walk up and down their area with me and search for any toads. "Should anyone can locate any toads tonight, those two will find one," says the group coordinator, pointing to her teenage child and the longtime volunteer. We've been out for 120 minutes without a glimpse of any amphibians, and now they have climbed over a wire barrier to check under some logs.

Family Involvement

The mother and son joined the patrol a while back. The youngster adores all things nature-related and has an goal to become a environmentalist, so his mother started to look for things they could do together to protect local wildlife. Now she enjoys it as much as he does, the 41-year-old small business owner explains – so when the team was looking for a fresh coordinator lately, she decided to step up.

The teenager, too, has been instrumental in the organization. A clip he made, urging the municipal authority to block a road through a protected area during breeding time, influenced the outcome the group's way. After a twelve months of campaigning, the council approved an "restricted access" restriction between 5pm and 5am from late winter through to April. Most drivers respected and avoided the route.

Additional Species and Challenges

A few vehicles go by when I'm out on patrol and we find some victims as a result – no amphibians, but several crushed salamanders. We see one live amphibian as well, and the youngster is particularly pleased to see a harvestman, which moves in his hands. Yet in spite of the group's best efforts to let me see a toad, the native community has clearly settled down for the winter. It appears that I couldn't have found any better success elsewhere in the nation – all the rescue teams I reach out to clarify that it's very difficult at this time of year.

This team anticipates assisting around ten thousand mature toads over the street

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 group in the UK, arrives in my inbox with the subject line: "No toads." However, in February and March, he tells me, the group plans to assist around 10,000 mature amphibians over the street.

Effectiveness and Limitations

How much of a difference can these groups truly achieve? "The fact that people are performing this consistently on chilly, wet and miserable late nights is remarkable," says 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 vehicles is not the only threat.

Additional Threats

The climate crisis has meant extended spells of dry weather, which create the poor environment for some of the animals that toads consume, such as worms and slugs, while higher water temperatures have led to an rise of blue-green algae, which can be toxic to toads. Warmer cold seasons also lead toads to emerge from their dormancy more frequently, disrupting the resource preservation crucial to their life cycle. Habitat destruction – particularly the loss of big water bodies – is an additional threat.

Researchers are "often concerned 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 significant part in the ecosystem, consuming almost any invertebrates or small animals they can fit in their mouths and in turn feeding a variety of birds and mammals, such as wildlife. Enhancing situations for toads – such as creating more ponds, protecting forests and installing amphibian passages – "we'll improve them for a wide range of additional wildlife."

Historical Importance

Another reason to try to keep toads present is their "important cultural value," notes an specialist. Myths and folklore around toads date back {centuries|hundred

Manuel Marquez
Manuel Marquez

A digital strategist with over a decade of experience in helping organizations leverage technology for innovation and sustainable growth.