Birds

Dippers (Cinclus cinclus) have nested high inside the main entrance of Porth yr Ogof for a number of years and do not seem bothered by the number of cavers splashing past them. In 2006 they nested lower down the opposite wall to get a better view of the cavers but the winter floods washed it away. The nest was rebuilt in 2007 but I'm not sure if they reared any young. Dippers are characteristic of Welsh upland streams where they swim underwater to catch invertebrates. They can even walk on the bottom!

Young Dippers in nest inside main entrance of Porth yr Ogof.

Other birds that use caves are:

Red-billed Choughs (Pyrrhocorax pyrrhocorax) in sea caves of Pembroke, Rock Doves (Columba palumbus) in Gower, Jackdaws (Corvus monedula) and Wrens (Troglodytes troglodytes).