Occurrence of Attributes in Original Text

The text related to the cultural heritage 'St Kilda' has mentioned 'Birds' in the following places:
Occurrence Sentence Text Source
[65] The mainstay of their food supplies was the profusion of island birds, especially gannet and fulmar.
These they harvested as eggs and young birds and ate both fresh and cured.
[74] During the 19th century, steamers had begun to visit Hirta, enabling the islanders to earn money from the sale of tweeds and birds' eggs but at the expense of their self-esteem as the tourists regarded them as curiosities.
[135] The only "habitation" is Sean Taigh (old house), a natural cavern sometimes used as a shelter by the St Kildans when they were tending the sheep or catching birds.
Criterion (v): The cultural landscape of St Kilda is an outstanding example of land use resulting from a type of subsistence economy based on the products of birds, cultivating land and keeping sheep.
Criterion (x): St Kilda is one of the major sites in the North Atlantic and Europe for seabirds with over 1,000,000 birds using the island.