Cercomacra laeta
In 3 days ~10% in a week ~20%
Willis's antbird (Cercomacroides laeta), also known as the laeta antbird, is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Brazil and Guyana. Willis's antbird was described by the American ornithologist W. E. Clyde Todd in 1920 as a subspecies of the dusky antbird and given the trinomial name Cercomacra tyrannina laeta. A 1997 study found that Willis's antbird differed from the dusky antbird in both plumage and voice and as a result, Willis's antbird was promoted to species status. The 1997 paper suggested its English name to commemorate the American ornithologist Edwin O'Neill Willis.
A molecular phylogenetic study published in 2014 found that Cercomacra was polyphyletic. The genus was split to create two monophyletic genera, and six species including Willis's antbird were moved to the newly erected genus Cercomacroides.
Willis's antbird is 13.5 to 14.5 cm (5.3 to 5.7 in) long and weighs 15 to 17 g (0.53 to... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Belém | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Willis's Antbird sighting in Belém on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 126th most-seen of the 144 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.
June and October
In those months about 10% of wildlife watchers report a Willis's Antbird in Belém on a given day, against under 5% in July–September and November–May, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Willis's Antbird 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 Belém, in our data
Belém is the only city on Wallace's Line with enough records to rate Willis's Antbird sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Thamnophilidae
The closest relatives of the Willis's Antbird that you can see in Belém (family Thamnophilidae, Typical Antbirds) are Chestnut-backed Antshrike (about 10%) and Southern White-fringed Antwren (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Willis's Antbird is recorded against all the birds logged in Belém (6 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.
