Yellow-throated Vireo

Yellow-throated Vireo (Birds of North Carolina: Their Distribution and Abundance)
The Yellow-throated Vireo has a breeding range that closely matches the “eastern deciduous forest” biome. As with most migratory songbirds, it winters south of the United States. It nests over most of the state, but is absent or scarce in the eastern Coastal Plain and in the higher mountains. It favors mature forests or groves, either wholly deciduous or at least mostly so (it tends to avoid pines), and has a slight preference for bottomlands or wooded streamsides (as opposed to swamps or to drier sites). This is a sluggish bird, usually remaining well up in the canopy, not moving much.

Yellow-throated Vireo (Cornell Lab All About Birds)
Yellow-throated Vireos are small songbirds, but they are chunky, with a big head, thick bill, and short tail. Males and females look as if they are wearing bright yellow spectacles on their olive-green head. The throat and chest match their spectacles, but the lower belly is bright white. Two white bars mark the gray wings.

Yellow-throated Vireo (Audubon Field Guide)
In leafy eastern forests, especially among the tall oaks, the slow, husky phrases of the yellow-throated Vireo can be heard in spring and summer. More colorful than most vireos, it is not any easier to see, usually remaining out of sight in the foliage.