Maybe a little noise would frighten the animal away.
That's a thing to frighten me with!
For a moment she lay still, afraid any movement would frighten him away like a wild cat in the daylight.
But how he did frighten me...
Some cuckoos are singular for their habit of using the nests of smaller birds to lay their eggs in, so that the young may be reared by foster-parents; and it has been suggested that the object of the likeness exhibited to the hawk is to enable the cock cuckoo either to frighten the small birds away from their nests or to lure them in pursuit of him, while the hen bird quietly and without molestation disposes of her egg.