A flock of little things were flying, their movements too fast for her to make out.

High over their heads a flock of birds was flying in the same direction.

Last time a flock of wild geese flew down to rest.

Over all this water great flocks of birds flew daily.

As evening drew on, however, a flock of pigeons flew past.

The Flock flies out of a government meeting set up to decide what the government officials think is best for them.

A flock of wild ducks is flying south, and Tom with his shotgun sees them.

If a flock of birds were flying over a field, they would be calling "Fly!

I thought it was beautiful, for example, when Forrest leaves the graveyard and a flock of birds fly up.

A flock of pigeons numbering in the thousands flew over the city.