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Alder
Common alder can be found along riversides, and in fens and wet woodlands. Its exposed roots provide shelter for fish, and its rounded leaves are food for aquatic insects.
Alder buckthorn
An uncommon tree of wet woodlands, riverbanks and heathlands, Alder buckthorn displays pale green flowers in spring, and red berries that turn purple in autumn.
Alder fly
The Alder fly is a blackish invertebrate, with delicately veined wings that it folds over its body like a tent. It can be found near ponds and slow-flowing rivers; the larvae living in the silt at…
Four bat species you are likely to see in London
Use our guides below to find out how to identify some of the bat species you might find around London!
Protect London's chalk grassland for rare species
5 species to spot in London this spring and where to see them
Spot this seasons wildlife wonders.
What's in a name? How some species gained a London epithet
The massive conurbation that London is today often belies the rural nature of her not-too distant past.
Sand eel
Sand eels are a hugely important part of our marine ecosystem. In fact, the fledgling success of our breeding seabirds entirely depends on them.
Giant goby
One of the UK’s rarest marine species, this giant of the rocky shore is a very special fish.