One of the joys of a spring day is watching a fluttering, lemon-yellow brimstone alight on a flower - an early sign that the seasons are changing. It is commonly spotted in gardens, woodland and…

This hefty diving bird is a winter visitor to the UK, where it can be seen around the coast or occasionally on large inland lakes.

The Sitka spruce was introduced into the UK from North America in the 19th century. It has been widely planted as a forestry tree; look for classic needle-like leaves and pale brown, domed cones…

This scarce breeding duck is a summer visitor, spending the winter in Africa. Although large flocks can be found in their wintering grounds, they are usually only seen in pairs or small groups in…

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