Signals for survival
By: [by] Niko Tinbergen and Hugh Falkus; drawings by Eric Ennion.
Contributors: Falkus, Hugh, joint author.
Publisher: Clarendon P.
Published: 1970
Place of publication: Oxford
Language: eng
Number of pages: 80
Subjects: Lesser black-backed gull; Animal communication; Birds -- Behavior
Notes: Bibliography: p. 80.
Based on the film "Signals for survival" by Niko Tinbergen and Hugh Falkus, commissioned by the British Broadcasting Corporation.