The keeled skimmer is a dragonfly of heaths and commons with shallow pools. It has a skittish and weak flight, and is on the wing in summer and early autumn.

Y dolffiniaid trwyn potel yn nyfroedd Prydain yw’r rhai mwyaf o’u bath – maen nhw angen gallu ymdopi â’n dŵr oer ni! Dyma greaduriaid cymdeithasol iawn ac maen nhw’n fwy na pharod i nofio ochr yn…

Traditionally a coastal species, Lesser sea-spurrey has spread inland, taking advantage of the winter-salting of our roads. Its pink-and-white flowers bloom in summer.

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.

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

A delicate wader, Red-necked phalaropes are as comfortable swimming as they are on land. Unusually for birds, the females are more brightly coloured than the males.

The bright green ring-necked parakeet is an escapee and our only naturalised parrot; its success is likely due to warmer winters.

Known in America as the 'Eared Grebe' because of its golden ear tufts, the black-necked grebe is a rare nesting bird in the UK. It is easiest to spot around southern coasts in winter.…