Interpretation of territorial behaviour in terms of a critical disability hypothesis

The hypothesis is that the great majority of behaviour relating to territorial defence presents difficult anomalies in terms of the normal explanatory mechanism of individual selection. Many, if not all, of the difficulties involved can be solved by using a critical disability hypothesis based upon the principle of group selection. Given this latter model, it is possible to predict the development of (1) highly variable territories, (2) microterritories and (3) macroterritories.