Assertion: vireo's appearance | /r/SimilarTo | related cassin's vireo
Facets:
value: closely
type: DEGREE
Source sentences:
text: While this bird's appearance is similar to the closely related Cassin's vireo (Vireo cassinii), the Cassin's vireo can be differentiated by its lighter yellow patches, a smaller, thinner bill, and a brownish-grey crown.