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

This small duck is an uncommon winter visitor to the UK, where they're usually found on lakes, reservoirs and gravel pits.

The mountain hare lives in the Scottish Highlands and the north of England. They are renowned for turning white in winter to match their upland surroundings.

Red-necked grebes occasionally attempt to nest in the UK, but they're more often seen as winter visitors to sheltered coasts.

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…

This stocky wader is mostly a winter visitor to the UK, where it can be found on rocky, seaweed-covered coasts, often with groups of turnstones.

This large brittlestar can be found in rockpools around much of the UK, but be gentle - its arms are very brittle and will break off if disturbed.