The species was able to quickly replace lost birds - the population has a high proportion of non-breeding, non-territorial birds able to fill vacant territories.

"If there was a territory vacant in this country, and he would be willing to leave us, then yes, he might rise to Master of the City."

Many young birds starve if they cannot find a vacant territory once parental care ceases.

If they fail to find a vacant territory, they usually starve.

The young lemmings disperse in random directions looking for vacant territory.

Some secular Polish knights were granted vacant territories, especially in Culmerland, although most of the conquered territory was retained by the Teutonic Order.

They can acquire a territory by competing for a vacant territory, creating a new territory or by receiving all or part of a territory from their mothers.

Seizing this opportunity, SAC moved into this vacant territory and quickly became recognized as the leading group of warez scene artists.

On the first two fronts (north and centre), the Republicans managed to take only vacant territories.

They circled one another, like turkeys trying to keep in front of them a few square feet of vacant territory.