Assertion: petrel's plumage | /r/HasProperty | black
Facets:
value: all
type: DEGREE
Source sentences:
text: Its plumage is black above and dull white below, and it has a stubby black bill with pale blue edges.
text: It is square-tailed and has all-black plumage except for a snow-white rump that extends to the sides of the tail base and a broad white band on the under wings.
text: The plumage of the black petrel is all black, as are its legs and bill except for pale sections on bill.
text: The plumage is black above and dull white below and it has a relatively short black bill.