Black-bellied
Common name: Black-bellied Hummingbird
Scientfic name: Eupherusa nigriventris
Clades: Trochilini - Emeralds
A distinctive montane species, the Black-bellied Hummingbird is endemic to Costa Rica and western Panama, where it inhabits humid cloud forests and highland edges. This small, bold bird measures 8.5 to 9.5 cm (3.3 to 3.7 in) and weighs approximately 3.5 to 4 grams (0.12 to 0.14 oz). Its highland exclusivity and striking markings make it a special find for birders.
Male Description:
The male is unmistakable with his deep black underparts, contrasting dramatically with bright green upperparts. His wings are cinnamon-rufous, and the tail is dark with bronze highlights. His straight, medium-length bill is black and ideal for feeding at tubular flowers. In certain lights, his head and throat show a subtle iridescent sheen.
Female Description:
The female lacks the male’s black belly and instead has white underparts with fine green spotting on the flanks and sides. Her crown and back are metallic green, and the cinnamon wings are retained. Her tail is slightly shorter and tipped with white, contributing to a more delicate look. She shares the same straight black bill.
Habitat & Behavior:
Preferring elevations between 1,200 and 2,300 meters (3,940 to 7,545 feet), the Black-bellied Hummingbird frequents forest edges, clearings, and flowering shrubs. It feeds on nectar and small insects, often returning to the same flowering trees. Though not currently considered threatened, its limited range and reliance on cloud forest ecosystems make habitat conservation important.
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