A monthly series

Introduced by James Fisher

Many American wild birds cross the Atlantic every year. Where do they come from? How? And why? Four ornithologists discuss these questions: K. Williamson, Migration Research Officer of the B.T.O.; I.J. Ferguson-Lees, Executive Editor of British Birds; I.C.T. Nisbet, recently back from America;
F. King, of County Kerry, Eire

Illustrated with recordings made by William W.H. Gunn, of the Federation of Ontario Naturalists

(BBC recording)