The Guardian reported ahead of the series' start that a sixth episode would not be broadcast due to a fear of backlash from Conservatives and right-wing media over its themes of destruction of nature.[4] However, the BBC responded that Wild Isles was always planned as a 5-part series, and that the 'sixth episode' was a standalone feature called Saving Our Wild Isles to be released online.[5]
The series received positive reviews from critics.[6][7][8]
The Caledonian Forest is the only coniferous woodland left in Britain, and it is less than 1% of its former extent. The United Kingdom is one of the most nature-depleted countries on the planet, but the English oak trees are globally important. One oak in Blenheim Palace in Oxfordshire is 1064 years old. Oak trees provide homes for over 2300 species of animals and plants, including the white admiral, barn swallows, the coal tit, and willow warblers. A female hazel dormouse climbs an oak to collect honeysuckle for her offspring, and narrowly escapes a tawny owl.
Wild Isles on Location: Needles in a Haystack shows how the filming crew managed to get footage of the 27 pod of orcas hunting seals in Shetland.
Episode 2: Woodland
This episode looks at the woodlands of British Isles. These habitats support a great diversity of animal and plant life, yet hardly any of them still remain. Only 13% of Britain's original forest remains.
In the Scottish Highlands, a male western capercaillie calls to attract females, and fights off a rival male. Capercaillie were once extinct in Britain, and are now on the brink of extinction once more.
Attenborough ends the episode by discussing how we must protect and restore the woodlands of the British Isles.
Wild Isles on Location: Into the Canopy shows how the filming team captured footage of golden eagles in Scotland and a vast flock of starlings at their roost in Cornwall.
Episode 3: Grassland
All of the grasslands of the British Isles are now managed by humans. This episode looks at how important these habitats are for species of all kinds.
Attenborough visits a traditional hay meadow, important habitat of which less than 1% remains. He recalls how easy it used to be to find this habitat around Leicester where he lived as a boy in the 1930s. Some of the species that live here include meadow browns, the marbled white, hairy-legged mining bees and large blues.
When grass is allowed to grow longer, species like field voles flourish. A mother vole gathers food for her young while avoiding a short-eared owl.
Two-coloured mason bees lay their eggs inside the empty shells of brown-lipped snails, hollowed out by the larvae of the common European glowworm. The bees then carry bits of dry grass to their "nests" to hide them and give their young the best chance of survival. The way in which the bees carry the grass stems gives the impression of a witch riding a broomstick.
Introduced to Britain by both the Romans and the Normans, European rabbits have flourished. The rabbits perform their mating rituals, but a youngster is taken by a Eurasian buzzard. The largest colony of rabbits in Britain can be found in Dorset, and here they are hunted by European red foxes.
Almost half of Britain's butterflies, like the marbled white, large skipper and meadow brown are at risk of extinction. In a hay meadow in Gloucestershire, the large blue's lifecycle is dependent on the Sabuleti red ant. Large blues were once extinct in Britain, but after this extraordinary life cycle was discovered, they were reintroduced from mainland Europe.
Back in the Cairngorms, a male hen harrier dances through the air to impress a female. He must then throw dead voles for her to catch in midair before they nest.
The musical score was composed by George Fenton. This was the first time Fenton had composed a nature documentary score since 2011. The five soundtrack albums (one for each episode) contain the following tracks:
Episode 1: Our Precious Isles
Wild Isles Introduction / Front Tiles (1:42)
Orca (5:58)
Geology (1:43)
Birds Eye View (2:21)
The Door Mouse (4:29)
Bluebells (1:31)
Pollenating (2:32)
Lords and Ladies (2:43)
Fox Cubs (2:30)
Barnacle Geese (5:31)
Damoiselles (4:15)
Kingfisher (1:44)
Gannets (3:17)
The Puffins (4:04)
The Message (0:44)
Wild Isles Trail (0:26)
Wild Isles End Credits (0:31)
Episode 2: Woodland
Opening Titles (0:25)
The Eagle (2:36)
Woodlands (1:53)
Robin's Friend (1:39)
Pollen (2:16)
Capercaillie (4:10)
The Ants (3:55)
Roe Deer (2:37)
The Emperor (2:12)
Strange Love (2:51)
Red Squirrel (3:13)
Honey Buzzard (3:39)
Fallow Deer (2:49)
Fungi (3:56)
Starling, Pt. 1 (2:15)
Starlings, Pt. 2 (2:36)
Wild Isles End Credits (0:31)
Episode 3: Grassland
Opening Titles (0:25)
Grassland Intro (0:50)
The Hares (3:21)
The Macca (0:51)
Lapwing Chick (2:39)
The Fens (1:03)
Wild Horses (1:13)
Battling Horses (1:46)
Avoiding The Owl (3:33)
Witchcraft (4:00)
Rabbits and Foxes (5:49)
Invader (4:33)
The Highland Fight (3:49)
Adders (4:15)
Han Harrier (3:53)
Stags (4:54)
Wild Isles End Credits (0:31)
Episode 4: Freshwater
Opening Titles (0:25)
Dragonfly and Introduction (2:31)
River Journey (1:47)
Dolphins Chase (1:16)
Upstream and Leaping the Falls (3:01)
Salmon Breeding (1:04)
Beaver and Kits (2:38)
Spidery Courtship (4:52)
Bats at Night (3:33)
Toads Crossing (2:20)
Toadlets (2:34)
Mayfly (4:21)
The Shrew (3:03)
Grebes (3:24)
The Knots (4:13)
Wild Isles End Credits (0:31)
Episode 5: Ocean
Opening Titles (0:25)
Marine (Opening) (3:04)
The Seal Fight (3:41)
Exploring the Shallows (1:23)
The Seahorse (1:52)
The Cuttlefish Story (6:18)
Sea Slugs (2:02)
Crabs en Masse (2:22)
The Tides (1:14)
Starfish Hunting (3:30)
Otters (2:47)
Protecting the Home (3:56)
Exotic Creatures Basking Sharks (4:49)
Skilful Hunters (3:20)
Marine (Closing) (1:19)
Wild Isles End Credits (0:31)
Spelling Mistakes
Some of the names of the tracks contain spelling errors, e.g. "door mouse" rather than dormouse, "pollenating" rather than pollinating, "damoiselles" rather than demoiselles, "han harrier" vs hen harrier, "macca" vs machair etc.