Netherlands Journal of Zoology

Preface
pp. 1-4(4)

Bibliography
pp. 5-10(6)

List of Ph.D.-Students of Professor G. P. Baerends
pp. 11-13(3)

The Role of Biological Rhythms in the Photoperiodic Regulation of Seasonal Breeding in the Stickleback Gasterosteus a Culea Tus L
pp. 14-31(18)
Author: Baggerman, Bertha

Effects of Altered Adult Sex Ratio On the Behaviour of Breeding Herotilapia Multispinosa (Teleostei, Cichlidae)
pp. 32-44(13)
Author: Keenleyside, Miles H.A.

On the Development of Social Attachments in Birds
pp. 45-62(18)
Author: Kruijt, J.P.

On the Functional Significance of Long Call Components in the Little Gull
pp. 63-86(24)
Author: Veen, J.

Black-Headed Gull or Black-Headed Girl? On the Advantage of Concealing Sex By Gulls and Other Colonial Birds
pp. 87-102(16)
Author: Van Rhijn, Johan

Incubation in the Starling, Sturnus Vulgaris: Resolution of the Conflict Between Egg Care and Foraging
pp. 103-123(21)
Authors: Drent, R.H.; Tinbergen, J.M.; Biebach, H.

Growth and Abrasion of the Oystercatcher Bill in Relation To Dietary Switches
pp. 124-154(31)
Author: Hulscher, J.B.

Studies in Wild House Mice: Genotype-Environment Interactions for Attack Latency
pp. 155-169(15)
Authors: Van Oortmerssen, G.A.; Benus, I.; Dijk, D.J.

Fish Swimming Movements: a Study of One Element of Behaviour
pp. 170-185(16)
Author: Videler, J.J.

Neural Representation of a Behavioural Pattern: Fish Respiration
pp. 186-208(23)
Author: Ballintijn, C.M.

Brain and Behaviour: a Gordian Knot?
pp. 209-237(29)
Authors: De Ruiter, L.; Koolhaas, J.M.; Strubbe, J.H.

Abnormal Behaviour in Humans: a Theoretical Problem in Practice
pp. 238-278(41)
Author: Vodegel, Nance

Abnormal Behaviours in Farm Animals: Ethological Implications
pp. 279-299(21)
Author: Wiepkema, P.R.

The Organization of Interpersonal Behaviour of Depressive Patients
pp. 300-322(23)
Author: Bouhuys, A.L.

The Relationship Between Ethology and Paedology
pp. 323-347(25)
Author: Plooij, Frans X.

Eutrophication of Dutch Coastal Waters
pp. 348-359(12)
Author: Postma, H.

On the Recruitment of O-Group Plaice in the North Sea
pp. 360-376(17)
Authors: Zijlstra, J.J.; Witte, J. IJ..