The turtle dove is the UK's fastest declining bird species and is on the brink of extinction. A small and pretty pigeon, it breeds in lowland England and winters in Sub-Saharan Africa.

A tall and robust species of sedge, the Great fen-sedge has long leaves with sawtooth edges. It forms dense stands in lowland fens and around lakes.

One of the most colourful fish in UK seas, the cuckoo wrasse looks like it belongs in the tropics. Don't be fooled though, it's very much a native species.

The White-clawed crayfish is a freshwater, bronze-coloured crustacean with pale undersides to its claws - hence the name. It is under threat from an invasive and introduced species of crayfish.…

Living up to its name the Common blue damselfly is both very common and very blue. It regularly visits gardens - try digging a wildlife-friendly pond to attract damselflies and dragonflies.

Buddleia is a familiar shrub, well-known for its attractiveness to butterflies. It is actually an introduced species, however, that has become naturalised on waste ground, railway cuttings and in…