Val du Saou
This reserve consists of coastal clifftop woodland valley habitats and also has an area of heather and scrubland. A variety of migratory birds, including birds of prey, are often spotter here. The Countryside Interpretation Centre is housed within a World War Two German Bunker and displays information on the island's military and wildlife history
Fontburn
Fontburn is an important place for reptiles with common lizard, adder, slow worm and grass snake all recorded here. The reservoir was built in 1905, and the site is now managed in partnership with Northumbrian Water.
Bakethin
Wildfowl are best viewed during the winter months. Visitors include pochard, tufted duck, goldeneye, goosander, mallard and teal.
Whittle Dene
Whittle Dene reservoirs are part of a water supply system interconnected by streams and aqueducts. There is a bird hide overlooking the northern reservoir and this is accessed from part of the Hadrian's Wall Trail which passes along the southern edge. There is a tern nesting platform which is visible form the hide. In late spring the first sand martins gather, followed by large numbers of swallows and swifts which feed over the surface of the water. The autumn attracts regular visitors such as curlew, common sandpiper, dunlin, greenshank, osprey and big numbers of wildfowl.
Bell Crag Flow
The Border Mires is part of a group of 58 bogs in and around Kielder Forest. The majority are owned by Forest Enterprise and managed by a group of partners including the Trust.
Briarwood Banks
Semi-natural ancient woodland is a relatively rarity in Northumberland; this reserve is probably one of the best examples in the county. The woodland supports a diversity of plant species which reflect the variation in soil conditions. There are a number of locally uncommon species including two regional rarities: bird's-nest orchid and wood fescue. Other uncommon plants such as herb Paris and toothwort are present along with a very good bryophyte flora and several rare, ancient woodland indicator lichens.
St Nicholas Park
The Northumberland Wildlife Trust headquarters are situated in the grounds of St Nicholas Park. The park is a mosaic of different habitats; these include areas of maturing woodland, a small pond, grassland and a wildlife friendly garden. The park is surrounded by housing estates, and as a result acts as a refuge for many species of animal; with the variety of habitats there is a good number of species to be found in the grounds. There is a play area and a stone circle with examples of many of the rocks found around Northumberland.
Holywell Pond
The site consists of a large subsidence pond surrounded by grassland and some mature and semi-mature areas of woodland and scrub. The pond margins to the west and north are well vegetated with reed mace dominating and the surrounding grassland supports populations of common spotted and northern marsh orchids. There are two hides on site, including a public hide which is open at all times.
Holburn Moss
Lindisfarne has historical links with the reserve as it is alleged that the monks of Lindisfarne Priory used to take peat from here as fuel and this may account for the strange square hollows across the site. Now the reserve is an internationally designated wetland linked closely to the Lindisfarne National Nature Reserve area due to movement of wildfowl between the two. The reserve is managed in partnership with Ford and Etal Estates. The site is designated as open access but the bog area is hard going with occasional ditches and is not recommended.
Fencerhill Wood
The non-native sycamore is also present and, while seedlings are discouraged to prevent this tree taking over, the large specimens in the centre will remain. The site is well used by foxes, badgers and deer and a wide range of woodland and wetland birds nest in the reserve. The great spotted woodpecker is a regular visitor to the site searching for insects in dead and decaying wood. Common garden birds such as blackbird, robin, great tit and blue tit nest in the wood with the summer visiting chiff-chaff also present.
