Formicivora intermedia
Silhouette: Sheatherius · PhyloPic
In 3 days ~10%
The northern white-fringed antwren (Formicivora intermedia) is an insectivorous bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in mainland Colombia and Venezuela, on the Pearl Islands of Panama, and on the islands of Tobago and Margarita.
The German ornithologist Jean Cabanis described the northern white-fringed antwren in 1847 and coined its current binomial name Formicivora intermedia. It and what is now the southern white-fringed antwren (F. grisea) were later considered conspecific as the white-fringed antwren, which retained the binomial F. grisea. Worldwide taxonomic systems separated them again based primarily on their very different vocalizations detailed in a 2016 publication, though the Clements taxonomy did not do so until 2023. The North and South American Classification Committees of the American Ornithological Society retain the single white-fringed antwren species, though the South American Committee is seeking a proposal to adopt the split.
The northern white-fringed antwren has these six subspecies: Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Main Ridge Forest Reserve | 🇹🇹 Trinidad and Tobago | |
| 2 | Henri Pittier National Park | 🇻🇪 Venezuela | |
| 3 | Tayrona National Natural Park | 🇨🇴 Colombia |
Rare
Under 5% of wildlife watchers report a Northern White-fringed Antwren sighting in Valencia, Venezuela on a given day, based on 25 verified sightings from GBIF citizen-science data. It is the 107th most-seen of the 186 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
November and December
In those months about 10% of wildlife watchers report a Northern White-fringed Antwren in Valencia, Venezuela on a given day, against under 5% in January to October, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Northern White-fringed Antwren 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 cities where we can rate Northern White-fringed Antwren sightings, Valencia, Venezuela ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Caracas (Venezuela, under 5%).
Same family: Thamnophilidae
The closest relatives of the Northern White-fringed Antwren that you can see in Valencia, Venezuela (family Thamnophilidae, Typical Antbirds) are Barred Antshrike (about 20%) and Black-crested Antshrike (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Northern White-fringed Antwren is recorded against all the birds logged in Valencia, Venezuela (25 verified sightings), 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.
