Hylophilus pectoralis
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~30%
The ashy-headed greenlet (Hylophilus pectoralis) is a species of bird in the family Vireonidae, the vireos, greenlets, and shrike-babblers. It is found in Bolivia, Brazil, French Guiana, Guyana, Peru, Suriname, and Venezuela.
The ashy-headed greenlet is monotypic. It and the olivaceous greenlet (H. olivaceus) are sister species. The ashy-headed greenlet is 12 cm (4.7 in) long and weighs 10.3 to 12.4 g (0.36 to 0.44 oz). The sexes have the same plumage. Adults have a dull gray forehead, crown, and nape. They have a dull grayish white supercilium and grayish ear coverts. Their upperparts are dull greenish. Their wings and tail are dull greenish with brighter greenish edges on the feathers. Their chin is off-white, their throat mottled grayish white, their breast greenish yellow, their flanks grayish, and their belly dull white. They have a brown or orangey-brown iris, a dark brown maxilla, a lighter brown mandible, and pink-brown legs and feet. Juveniles have a more buffy (less gray) crown than adults.
The ashy-headed greenlet has a disjunct distribution. Its main range forms a rough backwards "E" shape that... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report an Ashy-headed Greenlet sighting in Parque Estadual Encontro das Águas on a given day, based on 77 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 179th most-seen of the 308 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
May, July–August and October
In those months about 10% of wildlife watchers report an Ashy-headed Greenlet in Parque Estadual Encontro das Águas on a given day, against under 5% in June, September and November–December, the lowest months. Those are among Parque Estadual Encontro das Águas's driest months, with about 35 mm of rain a month against 190 mm in January. January to April have too few records to rate.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Ashy-headed 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.
Only Parque Estadual Encontro das Águas, in our data
Parque Estadual Encontro das Águas is the only park on Wallace's Line with enough records to rate Ashy-headed Greenlet sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Ashy-headed Greenlet is recorded against all the birds logged in Parque Estadual Encontro das Águas (77 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.
