Assertion: gull's bill | /r/CapableOf | develop paler base
Facets:
value: usually
type: TEMPORAL
value: through the winter
type: TEMPORAL
Source sentences:
text: First-winter birds are gray-brown with a dark tail, a brown rump with dark bars, dark outer primaries and pale inner primaries, dark eyes, and a dark bill, which usually develops a paler base through the winter.