Very large for a hummingbird; size alone separates from many other species. Males are green overall with darker blackish chest and belly. Head appears black until it hits the light and reveals an iridescent purple crown and green throat. Females duller with grayish belly, mottled greenish sides, and speckled gray throat. Separate from Blue-throated Mountain-gem by longer bill, more speckled appearance on underparts, and smaller white tail corners. Used to be called Magnificent Hummingbird, but recently split into Rivoli’s Hummingbird (from southwest U.S. to Nicaragua) and Talamanca Hummingbird (found in mossy cloud forest in Costa Rica and Panama). Visits hummingbird feeders.
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