Vocal nocturnal birds that leave their parental territories in autumn. More often heard than seen with their "twit twoo" calls.
Fighting for survival, these small mammals are in rapid decline in the UK due to disease, habitat loss and 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.