Many of our birds are pretty much resident, but some regularly migrate huge distances. These maps show where birds ringed in Britain and Ireland have been found since ringing began in 1909. The darker colours on the first map show where most birds have been found. The second shows the locations of all birds, with some of the most exceptional movements highlighted.
What we can learn from 25 years of watching gardens
Exploring the value of a complete quarter-century of weekly garden bird observations from BTO's Garden BirdWatch covering the length and breadth of the country.