Baerends Symposium
La reconnaisance de l'oeuf par le Goéland argenté
Les fonctions de communication chez les animaux
An Evolution of the Conflict Hypothesis as an Explanatory Principle for the Evolution of Displays
An Introduction to the Study of the Ethology of Cichlid Fishes
A Model of the Functional Organization of Incubation Behaviour
Observations on the Behaviour of the Black Tern: Chlidoniasn.niger (L.) in the Breeding Area
Causation, Plylogeny and Ontogeny of Communication Behaviour
On the Phylogenetic Origin of the Snap Display in the Common Heron (ArdeacinereaL.).
On Causation and Function of the Pre-spawning Behaviour of Cichlid Fish
The Ethological Study of Internal Mechanisms Causing Behaviour ; Its Possibilities and Implications
A Quantitative Description of the Behaviour Changes During the Reproductive Cycle of the Cichlid Fish AequidensportalegrensisHensel
The Effect of Colour in Egg-recognition by the Black- HeadedGull (Larusr.[idibundus]ridibundusL.) I.
Do the Dummy Experiments with Sticklebacks Support the IRM- Concept?.
The Organization of the Pre-Spawning Behaviour in the Cichlid Fish AequidensportalegrensisHensel).
The Relationship Between Marking Patterns and Motivational State in the Pre-Spawning Behaviour of the Cichlid Fish ChromidotilapiaGuentheri(Sauvage).
Moderne Methoden und Ergebnisse der Verhaltensforschung bei Tieren. Orientierung der Bienen: Neue Erkenntnisse — neue Rätsel
Het onderzoekprogramma van het "Serengeti Research Institute" in Tanzania
Über die Schnappbewegung des Fischreihers, ArdeacineraL.
Fortpflanzungsverhalten und Orientierung der Grabwespe Ammophila campestris