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When night comes down with the long twilight there sounds a strange, almost awesome quawk in the dusk over the fields. It sends a thrill through me, notwithstanding its nightly occurrence all through July and August. It is the passing of a pair of night herons—the black-crowned, I am sure, although this single pair only fly over. Where the birds are numerous they nest in great colonies.
It is the wild, eerie quawk that you should hear, a far-off, mysterious, almost uncanny sound that fills the twilight with a vague, untamed something, no matter how bright and civilized the day may have been.