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Tree Sparrows

Trai Anfield heads to RSPB Old Moor reserve to seek out the once-common tree sparrow.

• 22 mins

Birds of the Taiga

Chris Sperring is in the Swedish taiga looking for the hawk owl.

• 22 mins

The Wolf Tracker

Chris Sperring is in mid-Sweden in search of wolves, following their tracks in the snow.

• 22 mins

Golden Pheasant

Brett Westwood searches for gold in East Anglian woods - the elusive golden pheasant.

• 22 mins

Dawn Chorus Day

Trai Anfield revels in a sound spectacle on International Dawn Chorus Day.

• 22 mins

The Tenby Daffodil

Chris Sperring joins botanist Ray Woods in west Wales to search for the Tenby daffodil.

• 22 mins

The Yuan Yang

Chris Sperring goes to the River Dart in Devon to look for mandarin ducks.

• 22 mins

Coquet Terns

Coquet Island off the Northumberland coast is the last breeding site for roseate terns.

• 22 mins

Glow Worms

Chris Sperring meets Robin Scagell on a night-time safari for the enigmatic glow worm.

• 22 mins

Pine Marten

Pine martens were once persecuted to near extinction but now are making a comeback.

• 22 mins

Native Lime

Chris Sperring is in Hampshire looking at lime trees with lime tree specialist Hugh Milner

• 22 mins

Segestria Florentina

Chris Sperring searches for tube web spiders at Exeter Cathedral.

• 22 mins

The Ivy Bee

Chris Sperring meets up with Richard Comont to find out more about the ivy bee.

• 20 mins

Fairy Rings

Chris Sperring talks to fungi expert Lynne Boddy about the weird world of fairy rings.

• 22 mins

Winged Buffet

Chris Sperring joins Peter Wright and Andrew Gibson at Spurn National Nature Reserve.

• 22 mins

Barnacle Geese of Caerlaverock

Trai Anfield and Brian Morrell witness huge flocks of barnacle geese at WWT Caerlaverock.

• 22 mins

Grey Seals of Blakeney

Trai Anfield visits the grey seals at Blakeney Point on the Norfolk coast.

• 22 mins

Lepidopteran Winter

Chris Sperring goes to Dorset to see how one butterfly in particular survives the winter.

• 22 mins

A Starling Eruption

Trai Anfield witnesses the dawn eruption of starlings from the Somerset Levels.

• 22 mins

Long-Tailed Tits: The Winter Flock

Chris Sperring spends a winter's day with a long-tailed-tit family.

• 22 mins

Crossbills

Trai Anfield searches for crossbills near Sherwood Forest in Nottinghamshire.

• 22 mins

Mendip Voles

Chris Sperring searches for one of the most abundant mammals in the UK, the vole.

• 22 mins

Adders of Loch Lomond

Trai Anfield encounters adders basking on the edges of Loch Lomond.

• 22 mins

Springtime in the Hazel Coppice

Chris Sperring visits a hazel coppice awash with springtime flowers.

• 22 mins

A Shell Nesting Bee

Trai Anfield is in Dorset to find a bee that builds its nest in empty snail shells.

• 22 mins

Turks and Caicos Islands: The Pygmy Boa Constrictor

Tom Heap joins a night safari in search of the Caicos pygmy boa constrictor.

• 22 mins

Turks and Caicos Islands: The Rock Iguana

Tom Heap meets the critically endangered rock iguana of the Caribbean.

• 22 mins

Green Hairstreak

The green hairstreak butterfly is making a comeback in the Pentland Hills.

• 22 mins

Guillemots of Skomer

Tim Birkhead looks at the guillemots of Skomer Island that have been studied for 42 years.

• 22 mins

Nightjars

Chris Sperring is in Somerset during the last days of summer listening for nightjars.

• 20 mins