Birda Logo
Species Guide
A photo of a White-bellied Mountaingem (Lampornis hemileucus), male
White-bellied Mountaingem, Male

White-bellied Mountaingem

Lampornis hemileucus

The White-bellied Mountaingem, known scientifically as Lampornis hemileucus, is a diminutive and enchanting species of hummingbird. This avian jewel measures a mere 10 to 11 centimeters in length, with males slightly heavier at around 6.2 grams compared to the females' 5.1 grams.

Identification Tips

Both sexes of the White-bellied Mountaingem possess a medium-length black bill and exhibit a distinctive long white stripe behind the eye, complemented by pinkish feet. The adult male is adorned with a glittering green face and crown, bronzy green upperparts, and bronzy uppertail coverts. The tail feathers are bronzy with dusky gray bands near the tips. A striking blue-violet gorget graces the male's throat, while the underparts are predominantly white with green speckles along the sides. The adult female is similar in appearance but with less luster on the face and crown, and a white throat speckled with green. Juveniles of both sexes display rusty fringes on their green feathers, with males sporting a dull bronze gorget.


This species thrives in the canopy of cool, very wet subtropical forests, and can also be found at the shrub level at forest edges, gaps, and clearings. It tends to avoid secondary forests and semi-open landscapes.


The White-bellied Mountaingem graces the Caribbean slope from north-central Costa Rica, extending south and east into western Panama as far as Veraguas Province. It is also found locally on the Pacific slope in Panama.


In Costa Rica, the White-bellied Mountaingem breeds at elevations between 700 and 1,400 meters and descends to 400 to 600 meters post-breeding. Males are known to be quite aggressive when feeding, often dominating other hummingbirds at flowering epiphytes.

Song & Calls

The song of the White-bellied Mountaingem is a complex medley of squeaks, trills both dry and liquid, and sputtering notes. When in pursuit, it emits squeaky sputtering trills, and its calls include a nasal 'deep' and rattling sequences 'de-de-drrrrr'.


Breeding season for this species in Costa Rica spans from August to March. However, details of its nesting and specific breeding behaviors remain a mystery.

Diet and Feeding

The White-bellied Mountaingem has a predilection for nectar from flowering trees, shrubs, and particularly favors epiphytes from the family Ericaceae and genus Columnea. It also supplements its diet with insects caught in flight or gleaned from foliage by the females.

Conservation Status

The IUCN has classified the White-bellied Mountaingem as Least Concern. Despite its somewhat restricted range, the species is locally common, and much of its habitat is intact, particularly within three national parks in Costa Rica.

App logo
Birda is a birdwatching app and community aimed at curious people who want to deepen their connection with nature.

White-bellied Mountaingems on Birda

A map showing the sighting location
Profile picture for Carlos Ulate
Carlos Ulate
14 Aug 2023 - 5:29am
Costa Rica

More Hummingbirds

Birda Logo

Your birdwatching journey like never before

Connect with nature in minutes
Take a walk, look out of the window and log the birds that you see. Feel good about those little connections to nature.
Discover the joy of birding
Find new birding spots, see more birds, share and celebrate with a like-minded community of nature lovers.
Play your part in saving nature
Logging your birding sightings and sessions turns into positive action for our planet. Every sighting counts.

Birda Blog

What Our Birders Say
Birda fan
I really enjoy using Birda, all sightings are recorded and photos can be added. There are monthly challenges which help to get you out to record your sightings. The Birda community are great and are happy to help with unidentified bird sightings. Suitable for all ages and experience!
Carl B
Helped me to identify more birds
Love this app and has helped me to identify more birds. The challenges and badges are great for keeping the motivation going to get out and keep birding.
Fantastic app - Love it!
Love this app and have used it almost daily. Lots of species information and easy to use. Love seeing birds spotted by other users in the UK and worldwide.
Great app for beginner twitchers
I’ve had a passion of photographing birds for a long time now but have only just gotten into proper birdwatching, and this app is brilliant for those just getting started. There is a great sense of community among users and the app is very easy to use and professional. Awesome app altogether
Paul F
Very good database
Highly recommend. It great that this app shows you male Vs female variations when posting. Very good database I'm really impressed.
Robred 2
Fun way to add to your birdwatching experience
I enjoy watching birds in my backyard, but this app helped me really pay attention while on vacation this summer. It was fun to add new birds to my bird watching app.
Makes you want to spot birds more
I think this app is fun. It makes you want to spot birds more so I guess in a way it encourages you to get out and about instead of sitting in front of the TV.
We've been waiting for an App like this
Excellent! We've been waiting for an app like this! Thank you! It would be nice if you could assign additional birds to sessions later!
Great App
Great app to use for logging and communicating with others who are interested in birds
Jane N
A great app
Enjoying it immensely and finding it useful too. Recording the different birds and counting them is showing me how the present climate is affecting them all. I've trebled the numbers by planting native hedging. A great app.
As featured in
Birda Logo
AboutPressAmbassadorsAffiliatesInfluencersCareersPrivacyTerms & Conditions
An app for birdwatchers
Connect with us
Copyright © 2024 Chirp Birding. All rights reserved.