Golden Vireo

The golden vireo (Vireo hypochryseus), or golden greenlet, is a species of bird in the family Vireonidae, the vireos, greenlets, and shrike-babblers. It is endemic to Mexico. == Taxonomy and systematics == The golden vireo was originally described in 1863 as Vireo hypochryseus, the binomial by which most systems know it. Its further taxonomy is unresolved. The IOC, the American Ornithological Society, the Clements taxonomy, and AviList retain its original assignment to genus Vireo. However, in 2016 BirdLife International's Handbook of the Birds of the World (HBW) moved it to genus Pachysylvia and renamed it the golden greenlet; as of 2025 it remains there. All of the systems assign the golden vireo these three subspecies: V. h. nitidus (or P. h. nitida) Van Rossem, 1934 V. h. hypochryseus (or P. h. hypochrysea) Sclater, PL, 1863 V. h. sordidus (P. h. sordida) Nelson, 1898 == Description == The golden vireo is about 12 to 13 cm (4.7 to 5.1 in) long and weighs an average of 12.2 g (0.43 oz). The sexes have the same plumage. Adults have a wide lemon yellow supercilium and streak above the lores with a dark streak through the eye. Their upperparts and tail are yellowish…