Here's the chorus and the three verses that I think are popular:

Chorus I am tired, and I am alone,
       Cutting the Bracken, Cutting the bracken
       I am tired, and I am alone,
       Cutting the Bracken forever

1 Behind the knoll, up on the knoll,
  Behind the pretty knoll
  Behind the knoll, up on the knoll,
  All the day alone

4 In the weather, oh that I am TIRED
  Often my heart, wounded by her
  When the others would be singing ditties
 I can only make a croon

6 What must I not be chanting
  What will I make a chant
  And I so far from other people
  I would be able to come to my meeting

The legend is that, the fairy who sings the song, was in love with the young girl whom he met when she came out to cut the bracken. When her family caught her, they kept her locked up in their home. Since she didn't come any more, he became despondent and sang the song. It works quite well as a lullaby, and the sentiment of the song goes that way. However, in Cape Breton at least, they've sped it up, so it's almost a dance piece. So goes the oral tradition. Anyway, the song was collected by Marjorie Kennedy-Fraser, but for some reason, only the chorus and first verse. Her Gaelic collaborator, Kenneth MacLeod, wrote the rest of the song that we have here.