Assertion: owl's vocalization | /r/HasProperty | uttered
Facets:
value: variously
type: DEGREE
Source sentences:
text: These vocalizations may be variously uttered when the birds are disturbed and angered at the nest (frequently preceding an attack on an interloping human or other animal), represent the vocal development of young owls, or are given during courtship and during territorial disputes with other owls.