Mellisuga, Antillean mango, Puerto Rican emerald
The vervain hummingbird (Mellisuga minima) is a species of hummingbird found in the Dominican Republic, Haiti, and Jamaica, and is a vagrant to Puerto Rico. Its natural habitats are subtropical or tropical moist lowland forests and heavily degraded former forests.
It is considered the second-smallest bird in the world after the bee hummingbird. Typical length is 6 cm (2.4 in), including the bill, and weight is 2–2.4 g (0.071–0.085 oz). It also has among the smallest eggs in the bird world, with an average length of 1 cm (0.39 in) and weight of 0.375 g.