Besides the white eye, what two physical markers confirm the species status of Vireo griseus within the Vireo genus?
Answer
Yellowish spectacles and two prominent yellowish-white wing bars
While the white iris is the most iconic trait, confirmation of *Vireo griseus* status relies on recognizing other key physical markers that distinguish it from other members of the *Vireo* genus. Specifically, the bird displays yellowish spectacles, which are rings around the eye, although sometimes less prominent than in relatives. Additionally, it features two distinct, prominent yellowish-white wing bars. These elements—the spectacles, the wing bars, and the white eye—form the combination of features used to phenotype the species resulting from its underlying genetic structure.
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