Assertion: swan's predator | /r/HasProperty | common raven
Facets:
Source sentences:
text: Predators of trumpeter swan eggs include common raven (Corvus corax), common raccoon (Procyon lotor), wolverine (Gulo gulo), American black bear (Ursus americanus), brown bear (Ursus arctos), coyote (Canis latrans), wolves (Canis lupus), mountain lions (Puma concolor), and northern river otter (Lontra canadensis).