This black and grey solitary bee takes to the wing in spring, when it can be seen buzzing around burrows in open ground.

The nuthatch is a tit-sized, grey and rust-coloured bird that can be easily spotted climbing headfirst down tree trunks in woodlands and parks.

The large, dark grey water shrew lives mostly in wetland habitats. It's a good swimmer that hunts for aquatic insects and burrows into the banks.

The Notch-horned cleg-fly isa horse fly dark grey in colour, with grey-brown mottled wings and intricately striped, iridescent eyes. There are 30 species of horse-fly in the UK; this is one of the…

Caddisflies are a large order of insects that can be found in all kinds of wetlands. The larvae are known for making cases to pupate in, gathering stones, sand and leaves, and wrapping them with…

Red squirrels are native to the UK but are a lot rarer than their grey cousins. They live in a few special places across the UK thanks to reintroduction projects.

The house sparrow is a familiar, streaky brown bird of towns, parks and gardens. Males sport a grey cap and black bib, the size of which indicates their status.

The Downlooker snipefly gets its name from its habit of sitting on posts or sunny trees with its head facing down to the ground, waiting for passing prey. It prefers grassland, scrub and woodland…

The Yellow slug lives up to its name - its yellow body is mottled with grey patches. Often found in gardens and damp places in houses, it can be considered a pest, but is an important nutrient…