Assertion: storm petrel | /r/HasProperty | silent
Facets:
value: at sea
type: LOCATION
value: usually
type: DEGREE
value: at vocal
type: DEGREE
value: on the nest on land
type: LOCATION
Source sentences:
text: The storm petrel is usually silent at sea, but sometimes gives the chattering call.
text: Voice: White-faced storm petrels are silent at sea, but birds on the ground make cooing calls at the breeding colonies.
text: The white-bellied storm petrel is thought to be customarily silent at sea and vocal when on the nest on land.