Assertion: owl's ear opening | /r/HasProperty | concealed by feather
Facets:
value: on the sides of the head
type: LOCATION
Source sentences:
text: The outer ear openings, which are concealed by feathers on the sides of the head, are relatively smaller than those of the Eurasian eagle owl, being 2.3 cm (0.91 in) in vertical axis, with the left ear slightly larger than the right.