Vervain hummingbird in Jamaica
The vervain hummingbird (Mellisuga minima) is a species of hummingbird in the Trochilidae family. It is 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 forest.
It used to be 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 the among the smallest egg in the bird world, with an average length of 1 cm (0.39 in) and weight of 0.375 grams