The Jamaican Vervain Hummingbird is a small bird found only in Jamaica. It has a striking blue-green color on its head, back, and wings, and a white belly. The males have a black throat and distinctive tail feathers that are long and white, while the females have a green throat and shorter tail feathers. They are known for their quick, darting flight and their ability to hover in mid-air while feeding on nectar from flowers.