Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Surtsey' has mentioned 'Bird' in the following places:
Occurrence Sentence Text Source
The expansion of bird life on the island has both relied on and helped to advance the spread of plant life.
[28] In 2008, the 14th breeding bird species was detected with the discovery of a common raven's nest.
The first earthworm was found in a soil sample in 1993, probably carried over from Heimaey by a bird.