Occurrence of Attributes in Original Text

The text related to the cultural heritage 'St Kilda' has mentioned 'Bird' in the following places:
Occurrence Sentence Text Source
[146] The St Kilda archipelago has been recognised as an Important Bird Area (IBA) by BirdLife International for its seabird colonies.
There was concern that bird life on the island could be seriously affected.
[166][167] Fortunately, potential contaminants from the vessel including fuel, oils, bait and stores were successfully removed by Dutch salvage company Mammoet before the bird breeding season in early April.
The very high bird densities that occur in this relatively small area, conditioned by the complex and different ecological niches existing in the site and the productivity of the surrounding sea, make St Kilda unique.
Criterion (ix): St Kilda is unique in the very high bird densities that occur in a relatively small area, which is conditioned by the complex and different ecological niches existing in the site.