Fennel
Fennel has feathery leaves and open, umbels of yellow flowers. It was probably introduced by the Romans for culinary use, and is now a naturalised species of verges, waste ground and sand dunes.…
Chwilio
Speckled wood butterfly - Vicky Nall
Chwilio
Himalayan balsam
As its name suggests, Himalayan balsam is from the Himalayas and was introduced here in 1839. It now an invasive weed of riverbanks and ditches, where it prevents native species from growing.
Rhododendron leafhopper
An introduced species, the Rhododendron leafhopper is a striking mix of green and red, with a black stripe across its face. It can be found feeding on Rhododendrons (also introduced) in Southern…
Great black-backed gull
This huge gull can be seen around most of the UK's coasts in summer, with some venturing inland in winter.
Cotoneaster
Cotoneaster was introduced to the UK in 1879 from Eastern Asia as an ornamental plant. It is now an invasive non-native species which is taking over valuable habitats including limestone…
Lilac
Lilac is an introduced species in the UK that can sometimes be found in hedgerows and along woodland edges. Flower spikes appear in spring, beautifully scented and packed with small, lilac-pink…
Coniferous plantation
Dark and brooding from a distance, the strong geometric lines and monotonous rows of uniformly sized trees can jar the eye and seem devoid of wildlife. But venture within and open ride edges,…
My bigger picture
Acclaimed underwater photographer Paul Naylor has been diving and capturing images of life in the waters around the British coast for years, with over 2,000 dives to his name. He knows the impact…
Managing ash dieback on NWWT nature reserves
Ash dieback has spread rapidly through the Welsh countryside and has now affected all of North Wales Wildlife Trust's nature reserves with ash trees present.
Common mouse-ear
Common mouse-ear is a persistent 'weed' of fields and gardens, verges and hedgerows - all kinds of habitats. But, like many of our weed species, it is still a good food source for…
Common medium stonefly
As the name suggests, the Common medium stonefly is found in gravelly upland rivers and streams, often on bankside stones and plants. There are 34 species of Stonefly in the UK, which are hard to…
Four-spotted chaser
The Four-spotted chaser is easily recognised by the two dark spots on the leading edge of each wing - giving this species its name. It can be seen on heathlands and near ponds and lakes.