Assertion: herring gull | /r/HasProperty | opportunistic birds
Facets:
value: like many gulls
type: OTHER
value: very
type: DEGREE
Source sentences:
text: During early spring and late autumn, many herring gulls feed heavily on earthworms, but they are very opportunistic birds that seem to have many sources of food.
text: These herring gulls are opportunistic eaters.
text: Like many gulls, herring gulls are opportunistic omnivores eating carrion, fish, garbage, and stealing food from other birds.