Hylophilus semibrunneus
Silhouette: Sheatherius · PhyloPic
In 3 days <5% in a week ~10%
The rufous-naped greenlet (Pachysylvia semibrunnea) is a species of bird in the family Vireonidae, the vireos, greenlets, and shrike-babblers. It is found in Colombia, Ecuador, and Venezuela. The rufous-naped greenlet was originally described in 1845 as Hylophilus semi-brunneus.
The rufous-naped greenlet is monotypic. In the early twentieth century it was treated as a subspecies of the golden-fronted greenlet (P. aurantiifrons). The two are sister species and form a superspecies. The rufous-naped greenlet is 12 to 13 cm (4.7 to 5.1 in) long and weighs about 10 to 12.5 g (0.35 to 0.44 oz). The sexes have the same plumage. Adults have a rich rufous crown, nape, and ear coverts. Their lores, the area around their eyes, and their "moustache" are grizzled grayish white. Their upperparts are olive-green. Their wings' coverts are olive-green with paler edges. Their flight feathers and tail are dusky green with olive-green edges. Their throat is whitish, their breast is yellowish white with a rufous-tinged band on its upper part, and their belly, flanks, vent, and undertail coverts are pale yellowish. They have a dark iris, a pink bill, and leaden... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 2 | Los Nevados National Natural Park | 🇨🇴 Colombia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Medellín | 🇨🇴 Colombia |
Rare
Under 5% of wildlife watchers report a Rufous-naped Greenlet sighting in Los Nevados National Natural Park on a given day, based on 54 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 276th most-seen of the 424 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Rufous-naped Greenlet in Los Nevados National Natural Park on a given day, so our monthly data shows no clear season.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Rufous-naped Greenlet sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Rufous-naped Greenlet sightings, Los Nevados National Natural Park ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Farallones de Cali National Natural Park (Colombia, under 5%).
GBIF citizen-science records
It is estimated from how often the Rufous-naped Greenlet is recorded against all the birds logged in Los Nevados National Natural Park (54 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.
