Chaetocercus mulsant
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~20% in a week ~50%
The white-bellied woodstar (Chaetocercus mulsant) is a species of hummingbird in tribe Mellisugini of subfamily Trochilinae, the "bee hummingbirds". It is found in Bolivia, Colombia, Ecuador, and Peru. The white-bellied woodstar and several other species in genus Chaetocercus were formerly placed in genus Acestrura but have been in their current position since the late 20th century. The species is monotypic.
The white-bellied woodstar is about 8.5 cm (3.3 in) long and weighs about 3.8 to 4 g (0.13 to 0.14 oz). Both sexes have a straightish black bill. The male's upperparts are dark bluish green which continues onto the flanks. A downcurving white line behind the eye meets the white upper breast. Its gorget is iridescent reddish violet. The belly is white as are patches on the flanks. The forked tail is bluish green and its outermost feathers are shafts with no vanes. The female is bronzy green above. It has a grayish "mask" and a buff stripe behind the eye. Its throat is pale cinnamon, the belly white, and the flanks tawny. Its tail is rounded; the central feathers are green and the others cinnamon with a wide black band near the end... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Los Nevados National Natural Park | 🇨🇴 Colombia | |
| 2 | Chingaza National Natural Park | 🇨🇴 Colombia | |
| 3 | Podocarpus National Park | 🇪🇨 Ecuador | |
| 4 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 5 | Manu National Park | 🇵🇪 Peru |
With luck
About 10% of wildlife watchers report a White-bellied Woodstar sighting in Los Nevados National Natural Park on a given day, based on 451 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 101st most-seen of the 424 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
November
In that month about 20% of wildlife watchers report a White-bellied Woodstar in Los Nevados National Natural Park on a given day, against under 5% in July to September, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most White-bellied Woodstar sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 5 parks where we can rate White-bellied Woodstar sightings, Los Nevados National Natural Park has the highest daily chance: about 10%. Next come Chingaza National Natural Park (Colombia, under 5%) and Podocarpus National Park (Ecuador, under 5%).
Same family: Trochilidae
The closest relatives of the White-bellied Woodstar that you can see in Los Nevados National Natural Park (family Trochilidae, Hummingbirds) are Shining Sunbeam (about 40%), Great Sapphirewing (about 40%) and Golden-breasted Puffleg (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-bellied Woodstar is recorded against all the birds logged in Los Nevados National Natural Park (451 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.
