Lampornis cinereicauda
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~30% in a week ~50%
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 →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Los Quetzales National Park | 🇨🇷 Costa Rica | |
| 2 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report a Gray-tailed Mountain-gem sighting in Los Quetzales National Park on a given day, based on 14 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 79th most-seen of the 252 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
November
In that month about 30% of wildlife watchers report a Gray-tailed Mountain-gem in Los Quetzales National Park on a given day, against under 5% in May, July, September–October and December–March, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Gray-tailed Mountain-gem sightings with a recorded time, and about 7 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 Gray-tailed Mountain-gem sightings, Los Quetzales National Park has the highest daily chance: about 10%. Next come Tapantí-Macizo de la Muerte National Park (Costa Rica, about 10%).
GBIF citizen-science records
It is estimated from how often the Gray-tailed Mountain-gem is recorded against all the birds logged in Los Quetzales National Park (14 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.
