Seek for dormice and bats finds toads up timber

Citizen science initiatives searching for hazel dormice and bats have found one other, extra sudden inhabitant of timber: frequent toads.

Researchers from the College of Cambridge and amphibian charity Froglife, supported by the Individuals’s Belief for Endangered Species (PTES), have investigated the tree-climbing potential of amphibians at a nationwide scale.

In a research printed within the journal Plos One, they reveal volunteers participating within the Nationwide Dormouse Monitoring Programme run by PTES and the Bat Tree Habitat Key venture had discovered toads in nest bins and tree cavities.

Widespread toads are considered typical terrestrial amphibians, spending time each on land and in water throughout breeding, conservationists stated, with solely a handful of documented sightings of the amphibian in timber.

However there have been greater than 50 data of amphibians being discovered within the surveys, in dormice nest bins, tree cavities and even a current however empty blackbird nest, the researchers discovered.


In some circumstances there was a couple of animal found – although they weren’t discovered dwelling with different species corresponding to dormice.

Of the 277–400 websites surveyed yearly for dormice since 2009, 18 woodland websites had amphibians in nest bins, that are usually positioned 120-150cm off the bottom (4-5ft) – and in a single case a hen’s nest.

Within the 1,388 timber surveyed for bats, one other 20 amphibians have been discovered between 2015 and 2019.

A lot of the 65 amphibians recorded have been frequent toads, and one had managed to get greater than three metres (10ft) up a tree, clambering right into a hole 280cm up an oak tree after which crawling one other 25cm up contained in the cavity.

With lots of the tree hollows searched small or not seen from the bottom, it’s unclear how toads are discovering them and the way troublesome it’s for them to climb sure species, although they appear significantly to move for goat willow.

However the consultants recommend toads may very well be drawn to timber as a result of they supply a humid setting with loads of woodlice, slugs and ants they feed on, that’s secure from predators and even parasites.


The findings recommend the variety of toads commonly utilizing tree cavities in Britain may very well be “substantial”, in response to the research.

Conservation consultants stated it confirmed the significance of defending pure woodland habitats, significantly historical timber which have hollows and cracks, for all wildlife, together with frequent toads which have suffered 68% declines on common over the previous 30 years throughout the UK.

As timber haven’t been surveyed for toads, however are examined for creatures corresponding to dormice and bats, it highlights the significance of sharing information between organisations representing totally different species, they stated.

Examine writer Dr Silviu Petrovan, trustee at Froglife and senior researcher on the College of Cambridge, stated: “These findings are vital and really thrilling for our understanding of the ecology and conservation of frequent toads, probably the most widespread and plentiful European amphibians.

“We all know frequent toads favour woodlands as foraging and wintering habitat, however it seems their affiliation with timber is way more complicated that we thought.

“It additionally highlights the significance of collaborations and sharing information between conservation teams.

“Additional, focused analysis will allow scientists to raised perceive the explanations for this behaviour and the affect on woodland administration for frequent toads and different amphibians.”



Leave a Reply