Hibernacula are piles of logs, bricks/rocks and tubes covered in soil and turf which provide a space for reptiles and amphibians to take refuge during the active season and to hibernate during winter. They can be below ground if on dry soil or above ground if the soil is generally wet and must be in a position which is generally sunny and won't flood.

Wiltshire Wildlife Trust has advice here on their creation.

In order to find enough food and mate, hedgehogs need to be able to move through greenspace including parks and gardens. Holes in fences can make a big difference in their ability to do this. A hole 13cm by 13cm square is sufficient for a hedgehog.

Hedgehog Street provides more advice on this here along with more ideas about ways to help hedgehogs.

The creation of new hedgerows can provide a range of benefits including for wildlife, screening, carbon capture, flood management and even wood fuel or as a source of fruit and nuts. Hedgerows provide connectivity across landscapes and link existing hedges or habitats.

When creating a new hedge, you may consider building a bank, which is typical of many hedgerows on Exmoor. Species planted will depend on local conditions and what the hedgerow is for. In some areas of Exmoor beech hedges are dominant, but where appropriate a range of native species is preferred for wildlife, aiming for a mixture of seven or more species. Suitable species might include hawthorn, blackthorn, holly, rowan, oak, hazel, field maple and guelder rose. Select trees to become standards and do not trim these. Use locally sourced plants where possible.

Devon Hedge Group has lots of advice on creation and management of hedgerows here.

97% of species-rich meadows have been lost since the 1930s, including in the last 30 years on Exmoor there has been ongoing dramatic decline in meadows. Species-rich meadows provide opportunities for a multitude of wildlife including rare flora as well as pollinators and other fauna whilst also acting as carbon stores.

Magnificent Meadows provides advice on creating or restoring meadows here and Exmoor National Park's Sowing the Seeds project may be able to provide locally sourced seed for some projects.