Assertion: vireo's nest | /r/HasProperty | parasitized by brown-headed cowbirds
Facets:
value: often
type: TEMPORAL
value: given the opportunity
type: CAUSE
Source sentences:
text: Nests commonly are parasitized by Brown-headed Cowbirds, and vireo offspring usually do not survive.
text: However, given the opportunity, their nests are often parasitized by the Brown-headed Cowbirds, who lay their eggs in the Bell's Vireo nests who raise their young as their own.