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.

This dainty seaduck is a winter visitor to our coasts, particularly in northern and eastern Scotland.

The pretty-in-purple Pasqueflower is now a rare plant in the UK, restricted to just a few chalk and limestone grasslands. Steeped in legend, it flowers at Easter, so is known as the 'anemone…

The ptarmigan is a master of disguise - matching its Highland surroundings perfectly by turning snow-white in winter and rock-grey in summer. It is confined to the mountains of Scotland, so is…

Sika deer were introduced to the UK in the 19th century. They are native to eastern Asia.

Despite appearances, this weird and wonderful creature is not a jellyfish! They're sometimes found washed up on our shores after westerly winds. Look but don't touch - they give a very…

The rare Slavonian grebe is an attractive diving bird with distinctive, golden ear tufts that give rise to its American name - 'horned grebe'.

The grayling is one of our largest brown butterflies and a master of disguise - its cryptic colouring helps to camouflage it against bare earth and stones in its coastal habitats and on inland…

Introduced from Japan in the 19th century, Japanese knotweed is now an invasive non-native plant of many riverbanks, waste grounds and roadside verges, where it prevents native species from…