Trust spokesman Mr Phil Quinn said: "This bat was already an adult when it was ringed by Dr Roger Ransome, a leading authority on greater horseshoe bats
in April 1976.
PROTECTING an ancient building in recent years has meant not only safeguarding one of the most important structures of the area, but also protecting the habitat of 200 lesser horseshoe bats
Heather McFarlane from the Bat Conservation Trust said: "The lesser horseshoe bat
is one of the rarest bats in the UK, so anything that can support their conservation and their stronghold in Wales is good news for the population as a whole."
For the past 20 years theVWT has been acquiring and adapting buildings as nature reserves for the lesser horseshoe bat
, Rhinolophus hipposideros.
Greater horseshoe bat
numbers in Britain have declined by over 90% in the last 100 years.
Natur Gwynedd is leading a bat hunt for species known to inhabit the Llanberis area, such as the common and soprano pipistrelle, long eared, daubenton and the rare lesser horseshoe bat
The lesser horseshoe bat
, which lives in Kerry and Limerick, may be the best way to stop malaria-carrying mosquitoes spreading to this country.
But there is only one problem if you would like to live there - you have to be a lesser horseshoe bat
The Vincent Wildlife Trust handbook is dedicated to the conservation of the lesser horseshoe bat
and is expected to establish the UK as a centre for the species' conservation in Europe, and is the first in the trust's 33-year history.
Bat populations in the UK saw a significant decline in the 20th century, with some of the country's 18 species - such as the Barbastelle and Greater Horseshoe bat
- now exceedingly rare.
Among the European bats which declined markedly in the middle of the 20th century, the lesser horseshoe bat
, Rhinolophus hipposideros suffered the most spectacular population crash (Feldmann 1967).
Some 32 of them, such as blazilius horseshoe bat
, southern horseshoe bat
, porcupine, manul, bezoar goat and Caucasian muflon live inZangazur National Park.