This species is probably the commonest of the three resident hummingbirds on Hispaniola, although not necessarily the most widespread. One of its local names is the Zumbador Mediano, in recognition of the fact that this species is midway in size between the larger Antillean Mango (Anthracothorax dominicus) and the smaller Vervain Hummingbird (Mellisuga minima). The male Hispaniolan Emerald appears to be a uniform green hummingbird, with a pinkish lower mandible, while the female has dull grayish underparts, a conspicuous white post-ocular spot and white tail tips. It is mainly found at higher elevations, especially in broadleaf and other forested habitats, rarely below 200 m and as high as at least 1500 m, although some authors have speculated that the species descends to lower altitudes in the post-breeding season (between September and December). The Hispaniolan Emerald lays two white eggs and its cup-shaped nests are placed 1–10 m above the ground. Forest destruction, especially in poverty-stricken Haiti, has undoubtedly precipitated a decline in this hummingbird’s overall population, but it remains reasonably common in the highlands of the neighbouring Dominican Republic.