Lionel Kellaway encounters the loudest amphibian in Europe, the natterjack toad.
Assessing a 60-year-old project on the Farne Islands, home to grey seals.
Alex James visits Oxfordshire to see how pheasants are reared for game shooting.
Brett Westwood goes in search of our only venomous snake, the adder.
Trai Anfield encounters adders basking on the edges of Loch Lomond.
Liz Bonnin presents the adelie penguin on a windswept Antarctic shore.
Miranda Krestovnikoff presents the wetland loving African Jacana.
Alasdair Grubb describes how a blue tit seemingly cried out for his help.
Rower and Olympic gold medallist Alex Gregory on the house sparrow for Tweet of the Day.
Olympic gold medal-winning rower Alex Gregory on the white stork for Tweet of the Day.
A seasonal offering from Tweet of the Day for the Christmas period.
Bill Oddie presents the alpine swift.
Michael Palin presents the iconic bald eagle from Alaska.
Orcadian author Amy Liptrot laments the Arctic terns of her childhood.
Writer Amy Liptrot recalls her work as the RSPB Corncrake officer on Orkney.
Orcadian writer Amy Liptrot on the greylag goose, which is widespread on the islands.
Writer Amy Liptrot discussed how hooded crows in Berlin remind her of her youth.
Miranda Krestovnikoff presents the Andean cock-of-the-rock from Peru.
Andy Clements is captivated by the excited chatter of pink-footed geese.
Andy Clements is entranced by the song of the garden warbler.
Professor Andy Radford describes a noisy encounter among green woodhoopoes.