La Amazilia ventricastaña (Amazilia castaneiventris) fué descubierta por Gould en 1856 y es una especie endémica de Colombia. Se localiza en la "Cordillera Oriental" y está catalogada en peligro crítico según los criterios de BirdLife International por su restringido rango de distribución y fragmentación de su hábitat. Se presume que su población total no excede los 2,500 individuos. De pico a cola ésta ave mide 8.4 centímetros.
The Chestnut-bellied hummingbird (Amazilia castaneiventris) was registered by Gould in 1856 and it is endemic of Colombia. It is located in the "Cordillera Oriental" and it is listed as endangered according to the BirdLife International criteria for its restricted range and his habitat fragmentation. It is assumed that the total population does not exceed 2,500 individuals. From Peak to tail its measures 3.30 Inches.
