Such drastic measures have been rare nationally, public housing officials in other cities say.

These in turn support a variety of plant life and there are at least six nationally rare species.

These habitats are rare both nationally and within the county of Somerset.

The nationally rare reed leopard moth is common at the site.

Four nationally rare and seven notable plant species are also present.

These host a wide variety of fauna, some of which is nationally rare.

The site was designated as it supported a large population of Mezereon which is nationally rare.

Four nationally rare species of breeding bird fauna are located here.

Due to the unspoilt rural nature of the parish it is home to some nationally rare wildlife.

The site is special because of its nationally rare plants.