Assertion: petrel's call | /r/HasProperty | given by bird
Facets:
value: on the breeding colonies
type: LOCATION
value: at night
type: TEMPORAL
Source sentences:
text: Voice: sooty shearwaters are usually silent at sea; most calls are given by birds at night on the breeding colonies, though occasional calls are given by birds flying over breeding colonies at night.
text: Voice: sooty shearwaters are usually silent at sea; most calls are given by birds at night on the breeding colonies, though occasional calls are given by birds flying over breeding colonies at night.