When the birds had crossed the narrow corridor of the Beam's influence, they resumed their former course.

The birds would not cross that line, but more gathered behind it.

A great dark shadow came out of Mordor like a huge bird crossed the moon and went away west.

In the spring, as birds cross the Gulf heading north, it is the first stop for food and rest.

There was nothing to suggest that the bird had crossed the veil of a trap-matrix.

Not even a bird crossed the night sky.

The bird would be crossing near the defense position closing the pass.

Some birds cross one way, and some the other, apparently randomly.

The birds had crossed the inlet beneath the surface.

The calls become faster and louder when the birds cross open ground or if an individual becomes separated from the group.