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Chwilio
Grey wagtail
A breeding bird of fast-flowing, upland rivers, the grey wagtail can also be seen in lowland areas, farmyards and even towns in winter.
Bullhead
Living up to its name, the bullhead has a characteristically large, flattened head and a tapering body. Look out for it in fast-flowing, stony rivers and streams.
Sand martin
The tiny, brown-and-white sand martin is a common summer visitor to the UK, nesting in colonies on rivers, lakes and flooded gravel pits. It returns to Africa in winter.
Sewage spills impact people and wildlife
Dr Sarah Perry, head of Cardigan Bay Marine Wildlife Centre, explains the impact of spilling sewage into our rivers and seas on people and wildlife.
UK Government’s deregulation agenda is dangerous: for the good of future generations, we must retain existing laws and enhance nature protection instead
We face an urgent nature and climate crisis. The situation is dire, with more than one in ten species in England on the brink of extinction and the UK amongst the most nature-depleted countries in…
Dace
The silvery dace can be seen gathering in large shoals in lowland rivers and streams. It is a member of the carp family and looks very similar to the chub, but is smaller.
Tench
A handsome fish, the tench has olive-green flanks, powerful fins and distinctive red eyes. It can be found in lowland lakes and slow-flowing rivers around the UK.
Water dock
As its name suggests, Water dock likes damp places, such as the egdes of canals, ponds and rivers. It is a tall plant with large, greenish flower spikes.
Brown trout
A fierce predator of small fish and flying insects, the brown trout is widespread in our freshwater rivers. It is has a golden body, flanked with pale-ringed, dark spots.
Common clubtail
The Common clubtail is on the wing in spring and summer. It is an elusive dragonfly that is easiest to see when it first emerges. It can be found along rivers in Southern England and Wales.
My observatory
Bill has spent much of his life on Hampstead Heath. Although he feels like he's miles away from anywhere, a break in the trees offers one of the best views of London City - when it's…