Extant Eocene first appearances in all BBC programmes
Chris Jones rescues and then releases a swift in this Tweet of the Day.
David Attenborough presents the sounds and story of the female cuckoo.
David Attenborough introduces the male cuckoo.
Urban Birder David Lindo on the swift.
Presenter Dermot O'Leary relishes soaring swifts and swallows bobbing in front of his car.
David Attenborough presents the South American hoatzin.
Musician Jimi Goodwin on his shock at discovering the cuckoo's wicked ways.
Wildlife gardener and writer Kate Bradbury enjoys the swift above her garden in Sussex.
Laura Howard describes how learning about nature turned the countryside into a fascination
Horror novelist and birdwatcher Stephen Gregory returns for a second Tweet of the Day.
David Attenborough presents the sounds and story of the swift.
The cuckoo has inspired Tara Robinson to create a play about bird migration.