Hylophilus poicilotis
Silhouette: Sheatherius · PhyloPic
In 3 days ~40% in a week ~80%
The rufous-crowned greenlet (Hylophilus poicilotis) is a species of bird in the family Vireonidae, the vireos, greenlets, and shrike-babblers. It is found in Argentina, Brazil, Paraguay, and possibly Bolivia. The rufous-crowned greenlet is monotypic. However, for much of the twentieth century what is now the grey-eyed greenlet (Hylophilus amaurocephalus) was treated as a subspecies of it. By the 1990s they were generally recognized as separate species.
The rufous-crowned greenlet is about 12.5 cm (4.9 in) long and weighs 9 to 12 g (0.32 to 0.42 oz). The sexes have the same plumage. Adults have a bright chestnut-brown forehead and crown and mottled grayish black ear coverts. Their nape, upper back, and shoulders are olive-green and their lower back and rump are a brighter green. Their wings are dull grayish black with thin greenish edges on the outer webs of the primaries and secondaries and yellow-green edges on the inner webs of the tertials. Their tail is grayish green with brighter greenish edges on the feathers' outer webs. Their throat is dull pale gray, their upper breast yellowish gray, their lower breast dull yellow, their flanks... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Itatiaia National Park | 🇧🇷 Brazil | |
| 2 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 3 | Iguazú National Park | 🇦🇷 Argentina | |
| 4 | Iguaçu National Park | 🇧🇷 Brazil |
Possible
About 20% of wildlife watchers report a Rufous-crowned Greenlet sighting in Serra dos Órgãos National Park on a given day, based on 121 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 126th most-seen of the 336 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 80%, if each day is a fresh chance.
February
In that month about 30% of wildlife watchers report a Rufous-crowned Greenlet in Serra dos Órgãos National Park on a given day, against about 10% in July and October, the lowest months. That is one of Serra dos Órgãos National Park's wettest months, with about 260 mm of rain against 50 mm in July.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Rufous-crowned 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.
2nd of 4
Of the 4 parks where we can rate Rufous-crowned Greenlet sightings, Serra dos Órgãos National Park ranks 2nd at about 20%. The best odds are in Itatiaia National Park (Brazil, about 40%).
GBIF citizen-science records
It is estimated from how often the Rufous-crowned Greenlet is recorded against all the birds logged in Serra dos Órgãos National Park (121 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.
