For 60 years Bardsey Bird Observatory has been monitoring bird migration. On its diamond jubilee, Adam Walton visits Bardsey to explore the observatory's work.
Discover 11,128,835 listings and 280,410 playable programmes from the BBC
For 60 years Bardsey Bird Observatory has been monitoring bird migration. On its diamond jubilee, Adam Walton visits Bardsey to explore the observatory's work.
Comprehensive News and Sport, the latest information and the best entertainment for Wales.
