It is also thought to play a role in territorial behavior.

In the aquarium, territorial behavior is different for every grouping, and will even vary by individuals.

Even when nesting close to other birds they may exhibit some territorial behavior.

A small congregation of flying fox fish may, however, exhibit territorial behavior.

Unlike the closely related guenons, they do not have any territorial behaviors.

Little is known about their territorial behaviour, but there have been reports of some species defending territories.

Males will show territorial behaviour if another male is at the edge of his territory.

This causes a switch from territorial behavior to a hierarchy of individuals.

Birds do not sing because they are happy; it is a territorial behaviour.

Little is known about territory size and territorial behavior because observation is difficult in the wild.