The way the nest-full every time we stirred
Stood up to us as to a mother-bird
Whose coming home has been too long deferred,
Made me ask would the mother-bird return
And care for them in such a change of scene
And might our meddling make her more afraid.
That was a thing we could not wait to learn.
We saw the risk we took in doing good,
But dared not spare to do the best we could

Robert Frost (“The Exposed Nest”)