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    • Rare UK animals quiz: how well do you know our endangered wildlife?

      Charlie Mellor  •  07 May 2025

    • Feeding wild birds: what, how, when and why

      Kayleigh Jacobs-Rutter  •  29 Apr 2025

    • 8 enchanting rainforests to explore in the UK

      Charlotte Varela  •  12 Mar 2025

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Crustaceans

You might not expect to find many crustaceans in the woods, but look under any rock or stump and they'll be there! Woodlice are land-based crustaceans and industrious nutrient recyclers. There are over 3,000 species of woodlouse worldwide, around 40 of those in the UK.

  • Trees woods and wildlife

    Common rough woodlouse

    Hardy, hungry, excellent composters. The humble woodlouse munches its way through just about anything it can find and is an expert in recycling nutrients.

  • Trees woods and wildlife

    Pill woodlouse

    Easily found and easily startled, the pill woodlouse is named after its habit of rolling tight into a ball when disturbed. They’re a common sight in woodland, parks and gardens alike.

Keep exploring

Trees woods and wildlife

Centipedes and millipedes

Centipedes and millipedes are many-legged recycling machines, find out about the types you'll find in the UK's woods.

Trees woods and wildlife

Crickets and grasshoppers

Whether they're chirruping in the tree tops or jumping around on the forest floor, explore the crickets and grasshoppers you'll find  in the UK's woods.

Trees woods and wildlife

Other invertebrates

Find out about the millions of woodland insects and invertebrates that live among the leaves, under bark, in dead wood, leaf litter and soil.

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The Woodland Trust is a charity registered in England and Wales (No. 294344) and in Scotland (No. SC038885).  A non-profit-making company limited by guarantee. Registered in England No. 1982873.

Woodland Trust (Enterprises) Limited, registered in England (No. 2296645), is a wholly owned subsidiary of the Woodland Trust. Registered office: Kempton Way, Grantham, Lincolnshire, NG31 6LL.

The Woodland Trust and Woodland Trust Nature Detectives logos are registered trademarks. Images © protected Woodland Trust. VAT No. GB520 6111 04.

Most Woodland Trust woods are certified to FSC® standards by the Soil Association. Certificate number SA-FM/COC-001270, Licence code FSC-C009406.