Assertion: petrel | /r/HasProperty | nocturnal
Facets:
value: to avoid predation
type: PURPOSE
value: at the breeding sites
type: LOCATION
value: strictly
type: DEGREE
Source sentences:
text: This petrel is strictly nocturnal at the breeding sites to avoid predation by gulls.
text: The Beck's petrel is a sea bird that may be nocturnal and is thought to breed in the Bismarck Archipelago, in an area of circular, mountainous islands.