The Coppery-headed Emerald is one of the few species of birds that are true endemics of Costa Rica, meaning only found in this country. The male is mostly green, with the copper hues on the head that can only be seen in the appropriate light and angle. The female has grey underparts and lacks the copper colors on the head. Both have a black downcurved bill, which help with identification versus similar species like the Rufous-tailed Hummingbird, with which it shares the brownish-red rump. They are one of the tiniest species of hummingbirds in Costa Rica. They are seen in the mid to high elevations, in places where there is high humidity, but specially in the Cinchona and Vara Blanca zone.