The summer roosts of lesser horseshoe bats
are typically in old, undisturbed buildings with stone walls and slate roofs.
Bodidris Hall's resident roost of Lesser Horseshoe Bats
have attracted such interest from the Countryside Council for Wales the hotel has agreed to enter into a management agreement.
In Yorkshire the bats were found in a Forestry Commission woodland in Ryedale, a site that was home to England's last known colonies of rare barbastelle and lesser horseshoe bats
more than 50 years ago.
Bodidris Hall, in Llandegla, near Ruthin, has a 160-strong colony of lesser horseshoe bats
, an endangered species, in an outbuilding.
But the council has now discovered some protected sitting tenants in the Grade II listed property - both greater and lesser horseshoe bats
The tower, originally known as the Belvedere, was built between 1820 and 1830 for the Morris family, who also have links to Sketty Park House.
In North Wales he tracked down lesser horseshoe bats
, visiting the largest collection in Europe in the cellars of deserted 19th century manor house Kinclaven Park in Caernarfon with expert Jean Matthews.
A spokeswoman for the trust said: "The cottage is used as a summer roost by the lesser horseshoe bats
who breed elsewhere in the winter.
At one time, there were 320 lesser horseshoe bats
roosting in the roof and the site was designated as a Site of Special Scientific Interest and a Special Area of Conservation to protect them.
The bats are still drowsy and not quite ready to venture too far and we've already seen natterer's bats, daubentons and even a few of the rare greater horseshoe bats
. People are often fascinated when I tell them that I manage a gold mine.
The headcount will also take in greater and lesser horseshoe bats
as well as the pipistrelle which is more common in the region.
The trust, a national charity based near Ledbury, manages nine reserves in South Wales, which accommodate around 25% of the region's lesser horseshoe bats
Seven other species have been recorded at the mines, including the common and soprano pipistrelle, the brown long-eared, Daubenton's, Noctule, Natterer's and the Lesser Horseshoe bats