The tiny, grey-brown house mouse is one of our most successful mammals. It thrives around buildings but is less likely to be found in our houses these days due to better construction.

The serotine is one of the first bats to appear at night and can be seen around lamp posts chasing moths, or at treetop height. It likes to roost and hibernate in old buildings in the south of the…

Swifts spend most of their lives flying – even sleeping, eating and drinking – only ever landing to nest. They like to nest in older buildings in small holes in roof spaces.

The tiny wren, with its typically cocked tail, is a welcome and common visitor to gardens across town and countryside. It builds its domed nests in sheltered bushes and rock crevices.

The sand lizard is extremely rare due to the loss of its sandy heath and dune habitats. Reintroduction programmes have helped establish new populations.