some of the trees in re-enadinna wood are two hundred years old. there has been little regeneration of the yew trees in the wood. overgrazing of the woodland floor by sika deer may be part of the reason for this, but small areas of the wood that have been fenced off since 1969 have experienced very little yew regeneration. the dense canopy created by the yew trees that lets very little sunlight through to the woodland floor may also prevent the growth of yew seedlings.