Translated from the German by Fritz Bauchwitz. Topics covered include migration, nests and colonies, courtship, partnership patterns and much more. Illustrated with coloured photographs, maps and diagrams. Condition: Boards with some fading, especially pronounced at edges, but otherwise sound and clean. Dust jacket a little worn, with reinforcement to one area of a fold, and some dust soiling to edges. Bookplate of Jeffery Boswall to front paste down, and a gift inscription to him to verso of title page.