The caterpillars are a rare visitor from southern England and have no natural predator.
BBC: Natural invasion causes health problems
The red-veined darter is a rare visitor from southern Europe and was spotted at Brecknock Wildlife Trust's Brechfa Pool nature reserve above Llyswen.
BBC: Rare dragonfly visitor at reserve
On its website, the John Muir Trust said Ben Nevis has rare and sensitive wildlife and warned that high visitor numbers contributed to erosion.
BBC: Three Peaks Challenge on Wanderlust endangered list
In south Wales, staff at Cwmcarn Forest Visitor Centre near Newport can already boast one new egg by their rare bird.
BBC: Monty the osprey
Among the exhibits at Crossrail's visitor information centre in St Giles High Street are medieval human bones found at Liverpool Street, a rare amber find and a piece of mammoth jaw bone.
BBC: Bronze Age transport route 'found during Crossrail dig'
应用推荐
模块上移
模块下移
不移动