River lamprey
The river lamprey is a primitive, jawless fish, with a round, sucker-mouth which it uses to attach to other fish to feed from them. Adults live in the sea and return to freshwater to spawn.
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Chwilio
Mallard
The much-loved mallard is our most familiar duck, found across town and country. If you're feeding the ducks please don't feed them bread - it's not good for them! Instead, they…
My social network
For our regular volunteers, weekly work parties on our nature reserves are not just about helping to protect local wildlife. They are also a chance to catch up with old friends, meet new ones and…
Amddiffynwch Natur
Over recent days, the UK Government has launched an attack on nature, weakening the laws that protect our wildlife and making a U-turn on manifesto promises to be the greenest Government ever: reversing reforms to farming and making energy decisions that will worsen climate change.
Common spangle gall wasp
The common spangle gall wasp produces a small, disc-shaped growth, or 'gall', on the undersides of oak leaves. Inside the gall, the larvae of the wasp feed on the host tissues, but cause…
Guelder-rose
The guelder-rose is a small tree of hedgerows, woods, scrub and wetlands. It displays large, white flowers in summer and red berries in autumn, which feed all kinds of birds, including Bullfinches…
Skomer Young Birders' Week 2026 - LIMITED AVAILABILITY
Skomer Young Birders’ Week is running for 2 sessions in 2026, 6th – 9th September and 9th – 12th September. Booking opens on Monday 8th Dece
Saltmarsh and mudflats
Saltwater marshes and mudflats form as saltwater floods swiftly and silently up winding creeks to cover the marsh before retreating again. This process reveals glistening mud teeming with the…
Knopper gall wasp
The knopper gall wasp produces knobbly red, turning to brown, growths, or 'galls', on the acorns of Pedunculate Oak. Inside the gall, the larvae of the wasp feed on the host tissues, but…
My out of office
When Andrew gets away from his desk, he likes to escape to the Gunnersbury Triangle Nature Reserve. From bramble bashing to bonfire building and clearing ponds, he’s always learning new ways to…
Cat flea
You are most likely to spot the cat flea if you have pets. It will feed on cats, dogs and people, although it can't live on us. It is a pest and needs to be controlled in the house for the…
Hornet
The fearsome-looking hornet may not be a well-loved insect, but it is actually much less aggressive than the common wasp. It is also an important pollinator and a predator of species that feed on…