"Dedicated to the memory of K. R. L. Hall."

Includes bibliographies.

K.R.L. Hall : a memoir / S. Gartlan -- Introduction : social behaviour and ethology / J.H. Crook -- Feeding dispersion in some overwintering wading birds / J.D. Goss-Custard -- Ecological determinants of breeding adaptations and social behaviour in two fish-eating birds / K.E.L. Simmons -- Problems of social structure in forest monkeys / F.P.G. Aldrich-Blake -- The socio-ecology of primates / J.H. Crook -- Effects of population density on behaviour in rodents / J. Archer -- Gender role in the social system of Quelea / J.H. Crook and P.A. Butterfield -- The pair bond in the zebra finch / P.A. Butterfield -- Communication by facial-visual signals / I. Vine -- The adaptive radiation of parental care in waterfowl / J. Kear -- Perceptual factors and observational learning in the behavioural development of young chicks / E. Cronhelm -- Visual experience and early social behaviour in chicks / S.J. Dimond.