Assertion: billed gull | /r/CapableOf | develop dark patch
Facets:
value: as in black-headed gull
type: OTHER
value: remarkably,
type: DEGREE
value: in winter
type: TEMPORAL
value: on the ear-coverts
type: LOCATION
Source sentences:
text: In summer plumage, it lacks a dark hood on the head, but remarkably, as in Black-headed Gull, in winter it develops a dark patch on the ear-coverts (although much smaller).