The black-headed gull is actually a chocolate-brown headed gull! And for much of the year, it's head even turns white. Look out for it in large, noisy flocks on a variety of habitats.

The common lime is a tall, broadleaf tree that is a natural hybrid between the Large-leaved and Small-leaved Limes. It can be seen in a variety of habitats, and has been widely planted along roads…

The Holm oak is an introduced species that has been widely planted near the coast and in parkland. It is self-seeding in the south of the UK. Its young leaves are spiny like Holly leaves, and it…

The fluffy, white heads of common cotton-grass dot our brown, boggy moors and heaths as if a giant bag of cotton wool balls has been thrown across the landscape!

A spindly tree of heathland and moorlands, and dry and sandy soils, the Silver birch is well known for its paper-thin, white bark. It is a great coloniser and can quickly spread in an area.

Look for the round, cottony, purple flower heads of the Woolly thistle on chalk and limestone grasslands in summer. It is mainly found in Southern England.

The stock dove looks very much like the woodpigeon, but without the white neck and wing patches. It can be spotted in woodlands and parks, and on farmland in winter, but rarely visits our gardens…

Growing in tufts, Crested dog's-tail is a stiff-looking grass, with a tightly packed, rectangular flower spike. Look for it in lowland meadows and grasslands.

The male whitethroat does, indeed, have a white throat! Arriving from Sub-Saharan Africa in April, it can be spotted on grassland and scrub, and along hedgerows. It is bigger than the lesser…