This dashing diving duck is a winter visitor to the UK's seas, coastal lakes and occasionally inland water bodies.

Like many of our farmland birds, the yellowhammer has declined in number in recent years. Spot this bright yellow bird singing from the top of a bush or fence, or in a mixed-species flock in…

Hairy bitter-cress is an edible weed of rocky places, walls, gardens and cultivated ground. Gathering wild food can be fun, but it's best to do it with an expert - come along to a Wildlife…

The stately grass-of-parnassus displays pretty, white flowers with green stripes. Once widespread, it is now declining as its wetland habitats are disappearing.

The land caddis is the only caddisfly in the UK to spend its entire time on land, with no stage in water. Look in oak leaf litter over winter to see the grainy cases of the larvae, in which they…

The common scoter has suffered large declines in the UK, threatening its survival here. Look out for this duck feeding at sea in winter when its numbers are bolstered by migrating birds.

The brown, oval flower heads of ribwort plantain balance on top of thin, wiry stems; the resulting seed heads provide food for birds in winter. Look for this 'weed' in lawns, fields and…

The teal is a pretty, little dabbling duck, which can be easily spotted in winter on reservoirs, gravel pits, and flooded meadows. Watching flocks of this bird wheel through a winter sky is a true…