Will Britain's Common Toads Survive from Roads and Terrible Decline?
It is Friday evening at 7:30, but rather than heading to the pub or watching a film, I've taken a train to a market town in Wiltshire to meet up with local helpers from a amphibian rescue group. These dedicated individuals sacrifice their evenings to protect the local toad population.
An Alarming Decline in Numbers
The common toad is growing more rare. A latest research led by an amphibian and reptile charity showed that the UK toad population have dropped by half since 1985. Observing a species that has been a fixture of the UK landscape in decline is described as "worrying" by researchers. Toads "don't require very specific conditions" and "should be able to live successfully in the majority of habitats in Britain," meaning 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 examine the reasons for the decline, cars is a major factor. Calculations suggest that 20 tons of toads are killed on British roads annually – in other words, hundreds of thousands. In contrast to frogs, which might be content to mate "with just a bucket of water," toads prefer big bodies of water. Their capacity to stay out of water for longer than frogs means they can travel further to find them – sometimes long distances. They tend to follow their ancestral migration routes – it's typical for mature amphibians to go back to their birth pond to mate.
Migration Patterns
Fittingly, the first toads begin their quest for a partner around Valentine's day, but others travel as far as April, waiting until it gets night and moving after sunset. During that time, toads begin migrating from where they have been hibernating "all pretty much at the same time."
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 crosses a road, they could all get run over, and that mating period would never happen – preventing a new generation of toads from being produced.
Rescue Groups Across the UK
Seeing many of toad carcasses on nearby streets "resonates deeply with people," and has led to the creation of rescue teams across the UK – 274 groups are officially listed with a countrywide program. These teams collect toads and transport them across roads in containers, as well as recording the number of toads they encounter and lobbying for other safety solutions, such as blocked roads and underground wildlife tunnels.
Volunteers usually work during the migration season, when toad crossings are frequent. However, this means they can overlook groups of young toads, which, having existed as spawn and then juveniles, exit their water habitats over an unpredictable schedule in late summer. Because of their size – just a couple of cm wide – "they can get obliterated by vehicles." And as being run over "basically turns them into mush," it's more difficult to collect information on them. At least when adult toads are killed, their carcasses can be tallied.
Year-Round Work
In contrast to most patrols, one local team, who are in their eighth season of functioning, go out throughout the year – not every night, but when conditions are damp, or if someone has posted about a toad sighting in their group chat. When I request to accompany them on duty, they concede 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 patrol their area with me and see what we can find. "If anyone can locate any toads tonight, that pair 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 scaled a wire barrier to check under some wood.
Community Participation
The family duo joined the group a year and a half ago. The youngster loves all things wildlife and has an ambition to become a environmentalist, so his mother started to search for activities they could do jointly to protect local wildlife. Now she loves it as much as he does, the middle-aged entrepreneur tells me – so when the group was looking for a new manager lately, she volunteered for the role.
The youth, too, has played an important role in the group. A video he created, urging the municipal authority to block a road through a nature reserve during migration season, swung the decision the team's way. After a twelve months of campaigning, the authority approved an "restricted access" restriction between evening and morning from February through to spring. Most drivers respected and avoided the road.
Additional Species and Challenges
Several vehicles go by when I'm out on patrol and we discover some casualties as a consequence – no amphibians, but three squashed newts. We spot one living newt as well, and the youngster is especially excited to see a harvestman, which moves in his hands. Yet despite the group's best efforts to show me a toad, the local population has clearly gone dormant for the winter. It appears that I wouldn't have had any more luck anywhere else in the nation – all the patrol groups I reach out to clarify that it's very difficult at this season.
They project rescuing nearly 10,000 grown amphibians during migration
A message I get from another volunteer, who has kindly taken the trouble to check for toads in a noted location, considered the largest accurately monitored toad population in the UK, reaches me with the title: "None found." However, in February and March, he tells me, the group plans to assist around 10,000 adult toads over the street.
Effectiveness and Limitations
How much of a difference can these organizations actually make? "The fact that volunteers are doing this regularly on chilly, wet and miserable evenings is quite extraordinary," notes an researcher. "That's something that very much should be celebrated." However, while rescue teams are able to reduce the drop, they can't stop it completely – partly since traffic is not the only threat.
Other Dangers
The global warming has resulted in longer periods of dry weather, which cause the wrong conditions for some of the creatures that toads eat, such as worms and slugs, while higher water temperatures have led to an increase of blue-green algae, which can be toxic to toads. Warmer cold seasons also lead toads to emerge from their hibernation more often, interfering with the energy conservation crucial to their life cycle. Habitat destruction – particularly the disappearance of large ponds – is another menace.
Experts are "always a bit worried about putting too much of a utilitarian spin on wildlife," however "There is a big value in just having these animals around." But toads do have an significant part in the food chain, consuming almost any small creatures or tiny organisms they can fit in their mouths and in turn sustaining a number of predators, such as hedgehogs and otters. Enhancing conditions for toads – ie creating more ponds, protecting forests and installing amphibian passages – "we'll improve them for a wide range of additional wildlife."
Historical Significance
Another reason to try to keep toads around is their "important cultural value," adds an expert. Legends and tales around toads go back {centuries|hundred