Living up to its name, the Robin's pincushion is a red, round, hairy growth that can be seen on wild roses. It is caused by the larvae of a tiny gall wasp that feeds on the host plant, but…

This small finch nests on moorlands and coastal crofts, spending the winter on the coast. The UK population has declined dramatically.

Living up to its name, the cherry gall wasp produces growths, or 'galls', on oak leaves that look like red cherries. Inside the gall the larvae of the wasp feed on the host tissues but…

Living up to its name, the oak apple gall wasp produces growths, or 'galls', on oak twigs that look like little apples. Inside the gall, the larvae of the wasp feed on the host tissues,…

As the only crow with a red bill and red legs, the all-black chough is easy to identify. But it's harder to spot: there are only small, coastal populations in Scotland, Ireland, Wales,…