He dropped his arm, and suddenly the air was filled with a sound like an enormous flock of birds taking flight from the treetops.

This species forms enormous flocks in winter.

By the time the last of the enormous flock soared past, not a single bird had dived at us or shrieked.

Almost immediately, an enormous flock of gulls came diving from the sky, giving piercing shrieks.

An enormous flock of little multicoloured birds lifted from the canopy.

The species lived in enormous migratory flocks until the early 20th century, when hunting and habitat destruction led to its demise.

Once found in enormous flocks, they are still to be seen in their thousands.

Also the strong east wind was helping forward enormous flocks of birds, most of them pigeons with white cowls.

This species forms enormous flocks when not breeding.

The confetti kept rising and expanding like an enormous flock of tiny glittering birds.