1) Behavior 2) Behaviour 
[nonverbal communication] Territoriality is a term associated with nonverbal communication that refers to how people use space to communicate ownership/occupancy of areas and possessions {Harv|Beebe|Beebe|Redmond|2008|p=209}. The anthropological concept branches from the observations of animal ownership behaviors. We can consider that this ...
Behaviour in defense of an area against another individual or individuals primarily of the same species. ... (12 Dec 1998) ... 
Behavior pattern in birds concerned with the occupation and defense of a territory, often characterized by intensive singing and clashes with rivals.
Type: Term Pronunciation: ter′i-tō′rē-al′i-tē Definitions: 1. The tendency of individuals or groups to defend a particular domain or sphere of interest or influence. 2. The tendency of an individual animal to define a finite space as its own habitat from which it will fight off trespassing animals of its own species...
[n] - the behavior of a male animal that defines and defends its territory
territoriality, territory maintenance 1. The status of a territory. 2. A behavior pattern in animals consisting of the occupation and defense of a territory. The behavior pattern in some animals in which they tend to remain within a certain area, primarily for the purpose of feeding, mating, and rearing their young; typically, this area is defend...
A behavior in which an individual defends an area against other individuals.
Defense of a specified location against intruders 
noun the behavior of a male animal that defines and defends its territory
Behavior pattern in birds concerned with the occupation and defense of a territory, often characterized by intensive singing and clashes with rivals.