Hardy mammals living in the highlands that moult to whiter winter coats at this time of year, camouflaged on the snow.
Bare-faced crows flocking together at dusk and dawn. Known for being intelligent, noisy and very sociable.
Britain's second largest bird of prey seen hunting.
Plump birds that change colour with the season.
Red legged crows under threat from habitat loss.
Large birds of prey with excellent fishing skills.
Streamlined mammals seen along river banks.
Gordon helps birds whose migrations start badly.
Vocal nocturnal birds leaving their parental territories.
Mammals in decline with aggressive competition.
Mammals readying themselves for hibernation.
Anadromous fish spawning in our rivers.
Burying beetles store carrion for their offspring.
Spectacular aerial acrobats flock to Norfolk.
Iconic mammals stocking up for winter.
The rutting stags of the isle of Rum in breeding season.
Arctic migrants flock to our warmer shores.
Some say this reed bed flyer actually has a moustache.
A colourful winter visitor to our countryside.
Tree-top singers that summer in the UK.
Black and white passerines roosting in their thousands.
The UK's only spiny mammal.
Migrating flocks foraging on farmland.
The largest member of the dolphin family around Britain.
Murmurations gathering to bathe and forage.
The wildlife that exploits the ripening apples.
Half the world population lives in UK waters.
White spots and flat-bladed antlers identify this deer.
This dog-sized deer barks and appears to have tusks.
The UK's largest bird of prey.
This colourful coastal wader also ventures inland.
The British native is threatened by its grey cousin.
This brute of a diver lacks waterproof plumage.
Ocean traveller that lurks around UK shores.
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From red deer to spiders to fungi, share your pictures of autumn.
Little things that make a big difference and are a lot of fun too.
Red deer
UK's largest resident deer species.
Birds on the edge of Britain
Radio 4 team recording at a Manx bird sanctuary.