Chlorostilbon assimilis
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~10% in a week ~30%
The garden emerald (Chlorostilbon assimilis) is a small hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is found in Costa Rica and Panama. The garden emerald was at one time considered a subspecies of the blue-tailed emerald (Chlorostilbon mellisugus). As its own species, it is monotypic.
The garden emerald is 7.8 to 8.5 cm (3.1 to 3.3 in) long and weighs about 3 to 4.1 g (0.11 to 0.14 oz). The adult male has dark metallic green upperparts with bluish green uppertail coverts. Its forked tail is blue-black and the central feathers have a light bluish green gloss. Its underparts are a brighter metallic green than the upperparts, sometimes with a light blue sheen, and it has white thigh tufts. The adult female has bright metallic green to bronze green upperparts with bluish green uppertail coverts. Its tail is blue-black, with dull metallic green central feathers and pale gray tips on the outer ones. It has dusky cheeks, a white or grayish white spot behind the eye, and pale gray underparts. Juvenile males are like the adult female but darker gray below.
The garden emerald is found... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 2 | Coiba National Park | 🇵🇦 Panama | |
| 3 | Parque Natural Metropolitano | 🇵🇦 Panama | |
| 4 | San Lorenzo Protected Forest | 🇵🇦 Panama | |
| 5 | La Amistad International Park (Panama) | 🇵🇦 Panama | |
| 6 | Volcán Barú National Park | 🇵🇦 Panama | |
| 7 | Chagres National Park | 🇵🇦 Panama | |
| 8 | Piedras Blancas National Park | 🇨🇷 Costa Rica | |
| 9 | Darién National Park | 🇵🇦 Panama | |
| 10 | Soberanía National Park | 🇵🇦 Panama | |
| 11 | Marino Ballena National Park | 🇨🇷 Costa Rica | |
| 12 | Corcovado National Park | 🇨🇷 Costa Rica | |
| 13 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 14 | Bastimentos Island National Marine Park | 🇵🇦 Panama |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Panama City | 🇵🇦 Panama |
Rare
Under 5% of wildlife watchers report a Garden Emerald sighting in San Lorenzo Protected Forest on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 214th most-seen of the 249 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
November
In that month about 30% of wildlife watchers report a Garden Emerald in San Lorenzo Protected Forest on a given day, against under 5% in December to October, the lowest months. That is one of San Lorenzo Protected Forest's wettest months, with about 380 mm of rain against 65 mm in February.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Garden 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.
4th of 14
Of the 14 parks where we can rate Garden Emerald sightings, San Lorenzo Protected Forest ranks 4th at under 5%. The best odds are in Chirripó National Park (Costa Rica, about 20%), Coiba National Park (Panama, about 10%) and Parque Natural Metropolitano (Panama, about 10%).
Same family: Trochilidae
The closest relatives of the Garden Emerald that you can see in San Lorenzo Protected Forest (family Trochilidae, Hummingbirds) are Violet-bellied Hummingbird (about 20%), Rufous-tailed Hummingbird (about 20%) and Violet-crowned Woodnymph (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Garden Emerald is recorded against all the birds logged in San Lorenzo Protected Forest (8 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.
