April 6, 2016 – Black-capped Vireo (Vireo atricapilla)
These vireos are found in areas of low scrub in Texas and Oklahoma in the United States and in parts of Mexico. Their diet is made up of insects, their larvae, and spiders, which they pick from foliage, sometimes hanging upside down or hovering while feeding. They build their hanging cup nests from leaves, grasses, plant fibers, spider silk, and sometimes paper scraps. The only sexually dimorphic vireo species, males acquire their adult plumage at two years old. They are classified as Vulnerable by the IUCN due to nest parasitism by cowbirds and habitat destruction.