Chlorostilbon melanorhynchus
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~50% in a week ~80%
The western emerald (Chlorostilbon melanorhynchus) is a species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is found in Colombia and Ecuador. The western emerald was originally described as a species and later treated as a subspecies of the blue-tailed emerald (Chlorostilbon mellisugus). Since the early 2000s the South American Classification Committee (SACC) of the American Ornithological Society, the International Ornithological Committee (IOC), and the Clements taxonomy have again treated it as a species in its own right. However, as of 2020 BirdLife International's Handbook of the Birds of the World (HBW) retained it as the C. mellisugus subspecies.
The IOC treats the western emerald as monotypic. The western emerald is 10.9 to 11.4 cm (4.3 to 4.5 in) long and weighs about 2.6 g (0.092 oz). Both sexes of both subspecies have a short black bill. The nominate... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 2 | Los Nevados National Natural Park | 🇨🇴 Colombia |
Possible
About 20% of wildlife watchers report a Western Emerald sighting in Farallones de Cali National Natural Park on a given day, based on 764 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 66th most-seen of the 542 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
January to May
In those months about 30% of wildlife watchers report a Western Emerald in Farallones de Cali National Natural Park on a given day, against about 10% in December, the lowest month.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Western Emerald sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Western Emerald sightings, Farallones de Cali National Natural Park has the highest daily chance: about 20%. Next come Los Nevados National Natural Park (Colombia, under 5%).
Same family: Trochilidae
The closest relatives of the Western Emerald that you can see in Farallones de Cali National Natural Park (family Trochilidae, Hummingbirds) are Violet-crowned Woodnymph (about 70%), White-necked Jacobin (about 60%) and Brown Violetear (about 60%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Western Emerald is recorded against all the birds logged in Farallones de Cali National Natural Park (764 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
