Native birds of Alaska in all BBC programmes
Martin Hughes-Games presents the bar-tailed godwit.
The BBC's Frank Gardner recalls great northern divers for Tweet of the Day.
Chris Packham presents the great northern diver.
Wildlife artist Jane Smith listens in the fog to a great northern diver.
Chris Packham presents the rhinoceros auklet, found near North America's western seaboard.
David Attenborough presents the snow bunting.
Miranda Krestovnikoff presents the snow goose found across Canada and Alaska.
Bill Oddie presents the snow goose.
Liz Bonnin presents the sonorous trumpeter swan of North America.
Brett Westwood presents the story and sound of the turnstone.