 Corn crakes are the subject of three stanzas of the seventeenth century poet Andrew <unk> 's " Upon <unk> House " , written in 1651 about the North Yorkshire country estate of Thomas Fairfax . The narrator depicts the scene of a <unk> cutting the grass , before his " whistling <unk> " unknowingly " <unk> the Rail " . The <unk> draws out the <unk> " all bloody from its breast " and " does the stroke <unk> " . It continues with a stanza that demonstrates the problematic nature of the corn crake 's nesting habits : 
