Can the UK's Common Toads Survive from Traffic and Population Collapse?
It is Friday evening at half past seven, but instead of going out or watching a film, I've caught a train to a town in the countryside to join volunteers from a amphibian rescue group. These dedicated individuals give up their nights to safeguard the local toad population.
An Alarming Decline in Population
The common toad is growing more rare. A recent research conducted by an wildlife conservation group revealed that the British common toad numbers have dropped by half since 1985. Seeing a species that has been a fixture of the UK landscape in decrease is described as "worrying" by experts. Toads "don't need very specific conditions" and "ought to live quite well in the majority of habitats in the UK," so if even they are struggling to persist, "it indicates that the ecosystem is unbalanced."
Toad populations across the UK have declined by almost 50% since the 1980s
The Danger from Traffic
Though the research 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 annually – in other words, hundreds of thousands. In contrast to frogs, which would probably be content to mate "if you left out a small container," toads favor big bodies of water. Their ability to remain away from water for longer than frogs allows they can journey farther to find them – often long distances. They tend to follow their traditional paths – it's common for adult toads to return to their birth pond to mate.
Migration Patterns
Fittingly, the initial amphibians begin their quest for a partner around Valentine's day, but some move as late as spring, until it gets dark and moving after sunset. During that time, toads start moving from wherever they have been overwintering "almost simultaneously."
A local helper, 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 have an orgy." If their path happens to a road, they could be killed by traffic, and that mating period would be lost – stopping a new generation of toads from being produced.
Toad Patrols Across the United Kingdom
Finding hundreds of toad carcasses on nearby streets "inherently strikes a chord with people," and has resulted in the creation of rescue teams across the UK – hundreds of organizations are currently registered with a countrywide program. These groups pick up toads and carry them across roads in containers, as well as counting the quantity of toads they find 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 toadlets, which, having existed as spawn and then juveniles, exit their ponds over an irregular timetable in late summer. Because of their size – just a couple of cm wide – "they are destroyed by vehicles." And as being run over "essentially crushes them," it's harder to collect information on them. At least when adult toads are lost, their remains can be tallied.
Annual Work
In contrast to most patrols, a specific volunteer group, who are in their eighth year of operating, go out year-round – not nightly, but whenever conditions are damp, or if someone has posted about a toad sighting in their messaging app. When I request to accompany them on duty, they admit it is "not a toady night" – toad hibernation season has begun and it's been a dry day – but several of the helpers gamely agree 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 14-year-old son and the longtime volunteer. We've been out for two hours without a single toad sighting, and now they have climbed over a barbed wire fence to check under some wood.
Family Involvement
The family duo joined the group a year and a half ago. The teenager loves all things wildlife and has an goal to become a conservationist, so his parent started to look for things they could do together to protect local wildlife. Now she enjoys it as much as he does, the middle-aged small business owner explains – so when the team was seeking a new manager lately, she decided to step up.
The youth, too, has been instrumental in the organization. A clip he created, urging the municipal authority to close a street through a nature reserve during breeding time, influenced the outcome the group's way. After a year of lobbying, the council agreed to an "restricted access" restriction between evening and morning from late winter through to April. Most drivers duly avoided the route.
Other Wildlife and Challenges
A few vehicles go by when I'm out on patrol and we find some casualties as a result – no toads, but several crushed salamanders. We see one live amphibian as well, and the youngster is especially excited to see a daddy longlegs, which moves in his hands. Yet despite the team's best efforts to let me see a toad, the native community has obviously gone dormant for the winter. It appears that I wouldn't have had any more luck anywhere else in the nation – all the rescue teams 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 a different helper, who has kindly made the effort to check for toads in a noted location, considered the biggest tracked toad population in the UK, arrives in my inbox with the title: "No toads." However, in February and March, he tells me, the group plans to assist approximately 10,000 mature amphibians over the street.
Effectiveness and Challenges
How much of a difference can these groups actually make? "The fact that people are doing this consistently on cold, damp and unpleasant late nights is quite extraordinary," notes an expert. "That's something that very much should be celebrated." However, while rescue teams are able to reduce the drop, they cannot prevent it entirely – partly since vehicles is just one danger.
Other Dangers
The climate crisis has meant extended spells of dry weather, which create the wrong conditions for some of the animals that toads consume, such as worms and slugs, while higher water temperatures have caused an increase of blue-green algae, which can be toxic to toads. Milder winters also cause toads to wake up from their dormancy more often, interfering with the energy conservation vital to their life cycle. Loss of environment – especially the disappearance of large ponds – is another menace.
Experts are "often concerned about putting too much of a utilitarian spin on biodiversity," however "There is a big value in just their presence." But toads play an significant part in the ecosystem, consuming pretty much any small creatures or small animals they can fit in their mouths and in turn sustaining a number of predators, such as hedgehogs and otters. Enhancing situations for toads – ie creating more ponds, protecting forests and installing amphibian passages – "benefits for a whole bunch of additional wildlife."
Historical Importance
An additional motive to try to keep toads around is their "important cultural value," adds an specialist. Legends and tales around toads date back {centuries|hundred