Herpsilochmus dorsimaculatus
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~20%
The spot-backed antwren (Herpsilochmus dorsimaculatus) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Brazil, Colombia, and Venezuela. The spot-backed antwren was described by the Austrian ornithologist August von Pelzeln in 1868 and given its current binomial name Herpsilochmus dorsimaculatus. The spot-backed antwren is monotypic.
The spot-backed antwren is 11 to 12 cm (4.3 to 4.7 in) long and weighs 9.5 to 10.5 g (0.34 to 0.37 oz). Adult males have a black crown and nape, a long white supercilium, a black streak through the eye, and grayish ear coverts. Their back and rump are dark gray with white edges on most back feathers and blackish patches. They have white-edged black scapulars and a hidden white patch between them. Their flight feathers are gray and black with white edges towards the end; their wing coverts are black with white tips. Their tail is black with white feather tips and white outermost feathers. Their throat and underparts are mostly white with a pale gray tinge on the sides and rear. Adult females have a buff forehead, some buff on their face, white... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Anavilhanas National Park | 🇧🇷 Brazil |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Spot-backed Antwren sighting in Anavilhanas National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 213th most-seen of the 291 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
May
In that month about 10% of wildlife watchers report a Spot-backed Antwren in Anavilhanas National Park on a given day, against under 5% in June to April, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Spot-backed Antwren sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Anavilhanas National Park, in our data
Anavilhanas National Park is the only park on Wallace's Line with enough records to rate Spot-backed Antwren sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Thamnophilidae
The closest relatives of the Spot-backed Antwren that you can see in Anavilhanas National Park (family Thamnophilidae, Typical Antbirds) are Black-crested Antshrike (about 40%), Klages's Antwren (about 30%) and Black-chinned Antbird (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spot-backed Antwren is recorded against all the birds logged in Anavilhanas National Park (12 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.
