Social Behaviour in Animals: With Special Reference to Vertebrates

I Introduction.- Statement of the problems.- The Herring Gull.- The Three-spined Stickleback.- The Grayling.- Types of social co-operation.- II Mating Behaviour.- The functions of mating behaviour.- Some instances of timing.- Persuasion and appeasement.- Orientation.- Reproductive isolation.- Conclusion.- III Family and Group Life.- Family life.- Group behaviour.- IV Fighting.- Reproductive fighting.- The functions of reproductive fighting.- The causes of fighting.- The peckorder.- V Analysis of Social Co-Operation.- Recapitulation.- The actor's behaviour.- The behaviour of the reactor.- Review of releasers.- Conclusion.- VI Relations Between Different Species.- The release of reactions.- The avoidance of release.- VII The Growth of Social Organizations.- Differentiation and integration.- The establishment of social ties.- Further developments.- Conclusion.- Regulation.- VIII Evolutionary Aspects of Social Organization.- The comparative method.- Comparison of social systems.- Comparison of releasers.- Conclusion.- IX Some Hints for Research in Animal Sociology.