The birds are highly gregarious outside the breeding season.

The first child in a family may be highly gregarious; the second one, shy and demure.

It is highly gregarious when not breeding, forming flocks of up to 100 birds.

It is highly gregarious, but does not follow ships.

Its five or more, highly gregarious species are known as sheep.

It is highly gregarious outside of the breeding season and will form large flocks.

It is highly gregarious outside the breeding season and forms large flocks.

It is a highly gregarious duck outside the breeding season and can form large flocks.

They are highly gregarious, with colonies numbering in the thousands of individuals.

It is highly gregarious, and will form large flocks when not breeding.