Lampornis castaneoventris
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~60% in a week ~90%
The white-throated mountaingem or white-throated mountain-gem (Lampornis castaneoventris) is a species of hummingbird in tribe Lampornithini of subfamily Trochilinae. It is endemic to the highlands of Costa Rica and Panama.
The white-throated mountaingem was formally described in 1851 by the English ornithologist John Gould based on a specimen collected by the Polish botanist Józef Warszewicz at an altidude of 1,800 m (6,000 ft) in the Cordillera de Chiriquí of western Panama. Gould coined the binomial name Trichilus castaneoventris where the specific epithet combines the Latin castaneus meaning "chestnut-brown" with venter, ventris meaning "belly". The white-throated mountaingem is now one of seven species placed in the genus Lampornis that was introduced in 1827 by the English zoologist William Swainson.
Two subspecies are recognised: The subspecies L. c. cinereicauda has sometimes been considered a separate species, the gray-tailed mountaingem. In 1999 Karl-Ludwig Schuchmann in the Handbook of Birds of... Wikipedia →
Call0:24
Panama · 2015
© Peter Boesman · XC271344 · CC BY-NC-ND 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Los Quetzales National Park | 🇨🇷 Costa Rica | |
| 2 | Volcán Barú National Park | 🇵🇦 Panama | |
| 3 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 4 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 5 | La Amistad International Park (Panama) | 🇵🇦 Panama |
Possible
About 30% of wildlife watchers report a White-throated Mountain-gem sighting in Chirripó National Park on a given day, based on 426 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 40th most-seen of the 332 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
June
In that month about 50% of wildlife watchers report a White-throated Mountain-gem in Chirripó National Park on a given day, against about 10% in September, the lowest month.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most White-throated Mountain-gem 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 5
Of the 5 parks where we can rate White-throated Mountain-gem sightings, Chirripó National Park ranks 4th at about 30%. The best odds are in Los Quetzales National Park (Costa Rica, about 80%), Volcán Barú National Park (Panama, about 70%) and Tapantí-Macizo de la Muerte National Park (Costa Rica, about 40%). All parks ranked.
Same family: Trochilidae
The closest relatives of the White-throated Mountain-gem that you can see in Chirripó National Park (family Trochilidae, Hummingbirds) are Rufous-tailed Hummingbird (about 60%), Snowy-bellied Hummingbird (about 40%) and Violet Sabrewing (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-throated Mountain-gem is recorded against all the birds logged in Chirripó National Park (426 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.
