Assertion: petrel's nest | /r/HasProperty | built in burrow
Facets:
value: in rock
type: LOCATION
Source sentences:
text: The nests are built in burrows or crevices in rock.
text: Nests are built in burrows, vegetation, cliff caves/crevices, and under man-made debris and onshore driftwood.
text: Breeding sites occur on offshore islands and rocky outcrops in dispersed colonies with grass-lined nests built in crevices and burrows.
text: The nests are built in burrows or crevices in rock.