Why do birds migrate? How do they find their way? Where do they go? How fast, and by what routes? These are some of the questions discussed by James Fisher, editor of the New Naturalist.
There are maps by J.F. Horrabin, drawings by 'Fish-Hawk', bird song by Percy Edwards, a film - "High over the Border" - about migration, by the National Film Board of Canada, and a demonstration of the 'ringing' of birds lent by the Zoological Society of London.
