They are no more than 1 m apart when roosting together.

The males of this species may roost together but the bird is primarily solitary.

Often a male and female can be found roosting together, especially just before the breeding season.

These qualities have chosen to roost together and form the illusion of an identity.

They also roost together, so mosquitoes spread the virus quickly through a flock.

Groups may roost together in a row in such a fashion as well.

Bachelor males are segregated from the females and may roost alone or together in small groups.

It could have been necessity that had them roosting together at night.

Because they roost together every night, such generosity is a good insurance policy against hunger.

"They like a really big tree, where hundreds of them can roost together," he said.