Will the UK's Toads Survive from Traffic and Population Collapse?
It's a Friday night at 7:30, but rather than going out or relaxing at home, I've taken a train to a market town in Wiltshire to join local helpers from a toad patrol. These dedicated individuals give up their nights to protect the native amphibian community.
An Alarming Drop in Numbers
The Bufo bufo is becoming increasingly rare. A latest study led by an wildlife conservation group showed that the British common toad numbers have dropped by half since 1985. Observing a species that has been a stalwart of the British countryside in decrease is labeled "concerning" by researchers. Toads "don't require very specific conditions" and "ought to live successfully in most of areas in Britain," meaning if even they are struggling to persist, "it kind of suggests 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 causes for the decline, cars is a major factor. Calculations indicate that 20 tonnes of toads are crushed on British roads annually – in other words, several hundred thousand. Unlike frogs, which might be happy to mate "with just a bucket of water," toads prefer large ponds. Their capacity to remain away from water for more time than frogs allows they can travel further to find them – often hundreds of metres. They tend to stick to their traditional paths – it's common for mature amphibians to go back to their natal pond to mate.
Migration Patterns
Fittingly, the first toads begin their quest for a mate around February 14th, but some move as late as April, waiting until it gets dark and travelling through the night. During that time, toads start moving from wherever they have been hibernating "all pretty much at the same time."
A local helper, who was raised in the region and has been working to save its amphibians since he was a child, explains that "They've got just one focus: to go and mate." If their route crosses a road, they could be killed by traffic, and that breeding season would be lost – preventing a next generation of toads from being produced.
Toad Patrols Throughout the UK
Seeing many of dead toads on nearby streets "inherently strikes a chord with people," and has resulted in the formation of rescue teams throughout the UK – 274 groups are officially listed with a countrywide program. These teams collect toads and transport them over streets in buckets, as well as recording the quantity of toads they encounter and lobbying for other protection measures, such as blocked roads and amphibian passages.
Patrols usually work during the breeding period, when toad crossings are more regular. However, this implies they can overlook groups of young toads, which, having been spawn and then tadpoles, exit their ponds over an irregular timetable in the end of summer. Because of their size – just a couple of cm wide – "they are destroyed by vehicles." And as being run over "basically turns them into mush," it's harder to get data on them. At least when adult toads are lost, their remains can be tallied.
Year-Round Efforts
Unlike most patrols, one local team, who are in their eighth season of operating, go out throughout the year – not every night, but when weather are damp, or if someone has reported about a toad sighting in their group chat. When I ask to join them on duty, they admit it is "not a toady night" – toad hibernation season has started and it's been a dry day – but a few of the volunteers gamely agree to walk up and down their area with me and see what we can find. "Should anyone can locate any toads tonight, that pair will spot one," says the patrol manager, pointing to her teenage child and the experienced member. We've been out for two hours without a glimpse of any amphibians, and now they have climbed over a barbed wire fence to inspect beneath some logs.
Community Involvement
The mother and son joined the group a year and a half ago. The teenager loves all things nature-related and has an goal to become a conservationist, so his mother started to search for things they could do together to help native animals. Now she enjoys it as much as he does, the 41-year-old entrepreneur explains – so when the group was seeking a new manager recently, she decided to step up.
The teenager, too, has played an important role in the group. A video he created, imploring the local council to block a street through a nature reserve during breeding time, swung the decision the group's way. After a year of campaigning, the authority approved an "restricted access" restriction between 5pm and 5am from February through to April. The majority of motorists duly avoided the route.
Additional Species and Challenges
Several vehicles go past when I'm out on duty and we find some victims as a result – no amphibians, but several crushed salamanders. We see one living newt as well, and the teenager is especially excited to see a daddy longlegs, which dances in his palms. Yet despite the team's best efforts to let me see a toad, the local population has obviously settled down for the winter. It seems that I wouldn't have had any more luck anywhere else in the nation – all the patrol groups I contact explain that it's very difficult at this season.
This team anticipates assisting around ten thousand mature toads over the street
A message I receive from another volunteer, who has kindly made the effort to look for toads in a noted location, thought to be the largest accurately monitored toad population in the UK, reaches me with the subject line: "No toads." However, in February and March, he informs me, the team expects to help approximately ten thousand adult toads over the street.
Impact and Limitations
What level of impact can these groups truly achieve? "The reality that people are doing this regularly on chilly, wet and miserable late nights is remarkable," 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 – partly since vehicles is just one danger.
Additional Threats
The climate crisis has meant longer periods of drought, which create the poor environment for some of the creatures that toads consume, such as worms and slugs, while warmer ponds have caused an increase of blue-green algae, which can be toxic to toads. Milder winters also cause toads to wake up from their hibernation more frequently, interfering with the resource preservation crucial to their existence. Loss of environment – particularly the loss of big water bodies – is another menace.
Experts are "often concerned about overemphasizing practical benefits on wildlife," but "There is a big value in just their presence." But toads play an important role in the food chain, consuming almost any small creatures or small animals they can swallow and in turn feeding a variety of birds and mammals, such as hedgehogs and otters. Enhancing situations for toads – ie creating more ponds, conserving woodland and installing amphibian passages – "we'll improve them for a whole bunch of additional wildlife."
Historical Significance
An additional motive to work to preserve toads present is their "historical significance," notes an specialist. Legends and tales around toads date back {centuries|hundred