Assertion: gull's spot | /r/Synonym | mirror
Facets:
value: often
type: TEMPORAL
Source sentences:
text: The wingtips are black with white spots known as "mirrors".
text: The wingtips are black with white spots known as "mirrors" and the trailing edge of the wing is white.
text: The wingtips are black with white spots often known as “mirrors” and the trailing fringe of the wing is white.