Assertion: gull's population | /r/HasProperty | opportunistic scavengers
Facets:
value: generally
type: DEGREE
Source sentences:
text: Although urban populations are generally opportunistic scavengers, they can shift to a predatory diet if necessary; this was observed during the lockdown of Italy in 2020, when the lack of food scraps led the yellow-legged gulls of Rome to take prey as large as rats and rock pigeons.