Will Britain's Common Toads Be Saved from Roads and Population Collapse?
It is a Friday night at half past seven, but rather than heading to the pub or watching a film, I've taken a train to a town in Wiltshire to meet up with volunteers from a amphibian rescue group. These dedicated individuals give up their evenings to safeguard the native amphibian community.
A Worrying Decline in Population
The Bufo bufo is becoming increasingly rare. A recent research conducted by an wildlife conservation group revealed that the British common toad numbers have dropped by half since the mid-1980s. Seeing a species that has been a stalwart of the British countryside in decrease is described as "concerning" by experts. Toads "don't require very particular environments" and "should be able to live successfully in most of habitats in the UK," so if even they are struggling to persist, "it kind of suggests that things are not as they should be."
The UK toad population has almost halved since 1985
The Threat from Roads
Though the research didn't cover the reasons for the decline, traffic is a major factor. Calculations suggest that 20 tons of toads are killed on UK roads every year – that is, several hundred thousand. Unlike frogs, which would probably be content to mate "if you left out a bucket of water," toads prefer large ponds. Their ability to stay out of water for longer than frogs allows they can journey farther to find them – sometimes hundreds of metres. They tend to stick to their traditional paths – it's typical for adult toads to return to their birth pond to mate.
Breeding Habits
Appropriately enough, the first toads start their journey for a partner around Valentine's day, but some move as late as April, until it gets night and travelling after sunset. During that period, toads start moving from where they have been hibernating "almost simultaneously."
A local helper, who grew up in the area and has been trying to protect its toad population since he was a boy, explains that "They've got just one focus: to go and mate." If their path crosses a road, they could be killed by traffic, and that breeding season would never happen – preventing a new generation of toads from being born.
Rescue Groups Throughout the United Kingdom
Finding many of toad carcasses on nearby streets "inherently strikes a chord with people," and has resulted in the creation of toad patrols across the UK – hundreds of organizations are currently registered with a national initiative. These teams pick up toads and carry them over streets in buckets, as well as recording the number of toads they encounter and advocating for other safety solutions, such as road closures and underground wildlife tunnels.
Patrols usually work during the migration season, when toad crossings are frequent. However, this implies they can overlook groups of young toads, which, having existed as spawn and then tadpoles, leave their water habitats over an irregular timetable in late summer. Because of their small stature – just one or two centimetres wide – "they can get obliterated by vehicles." And as being run over "basically turns them into mush," it's more difficult to get data on them. At least when mature amphibians are killed, their remains can be tallied.
Annual Work
In contrast to most patrols, one local team, who are in their eighth year of functioning, go out year-round – not every night, but whenever conditions are warm and wet, or if a member has reported about a toad sighting in their group chat. 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 volunteers gamely agree to patrol their route with me and see what we can find. "If anyone can locate any toads tonight, those two will find one," says the patrol manager, indicating her 14-year-old son and the longtime volunteer. We've been out for 120 minutes 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 while back. The teenager adores all things nature-related and has an ambition to become a environmentalist, so his parent started to search for activities they could do together to help local wildlife. Now she enjoys it as much as he does, the 41-year-old entrepreneur tells me – so when the group was seeking a new manager recently, she volunteered for the role.
The youth, too, has played an important role in the group. A video he made, imploring the municipal authority to block a road through a nature reserve during breeding time, influenced the outcome the group's way. After a year of campaigning, the authority approved an "access-only" restriction between evening and morning from late winter through to spring. Most drivers duly avoided the road.
Additional Species and Difficulties
Several cars go past when I'm out on patrol and we discover 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 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 obviously settled down for the winter. It appears that I wouldn't have had any more luck elsewhere in the country – all the patrol groups I reach out to explain that it's near-impossible at this time of year.
They project rescuing nearly 10,000 grown amphibians during migration
One email I get from another volunteer, who has generously made the effort to look for toads in a famous site, considered the biggest tracked toad group in the UK, arrives in my inbox with the title: "No toads." However, in February and March, he informs me, the group expects to help around ten thousand adult toads across the road.
Impact and Limitations
What level of impact can these organizations truly achieve? "The reality that volunteers are doing this regularly on cold, damp and unpleasant evenings is remarkable," notes an expert. "That's something that very much deserves recognition." However, while rescue teams are able to slow the decline, they cannot prevent it entirely – not least because vehicles is just one danger.
Other Dangers
The global warming has resulted in extended spells of dry weather, which create the poor environment for some of the creatures that toads consume, such as worms and slugs, while higher water temperatures have led to an rise of toxic plants, which can be harmful to toads. Warmer cold seasons also lead toads to emerge from their dormancy more frequently, interfering with the resource preservation vital to their existence. Habitat destruction – particularly the loss of large ponds – is another menace.
Researchers are "often concerned about putting too much of a utilitarian spin on biodiversity," however "It's important in just their presence." But toads play an significant part in the food chain, consuming almost any small creatures or tiny organisms they can swallow and in turn sustaining a variety of birds and mammals, such as hedgehogs and otters. Enhancing conditions for toads – ie building water habitats, protecting forests and constructing amphibian passages – "we'll improve them for a whole bunch of other species."
Cultural Significance
Another reason to work to preserve toads around is their "important cultural value," adds an specialist. Legends and tales around toads date back {centuries|hundred