It is normally solitary and is often difficult to see.

It is normally solitary and can be found at varying heights above the ground, often in the open.

The smooth trunkfish is normally solitary but sometimes moves around in small groups.

The mines are solitary and normally have two parallel folds, occasionally one or three.

The reproductive behavior of the normally solitary frogfish is still not fully researched.

Normally solitary, they have been known to form schools.

In real systems, electrons are normally not solitary, but are associated with one or more atoms.

It is normally solitary, but there are sightings of them in groups.

Although normally solitary, at times small groups may be observed traveling together.

This kind of behavior had never been documented before from these normally solitary creatures.