Macrosphenus flavicans
Silhouette: PhyloPic
In 3 days ~60% in a week ~90%
The yellow longbill (Macrosphenus flavicans) is a species of Old World warbler in the family Macrosphenidae. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests.
The yellow longbill, on average, measures 13 cm from bill to tail and weighs 11-16g. It is medium in size. It has a short tail and a black long straight bill with a small hook at the tip. It has a yellow iris and greenish-yellow underparts. It is dark olive-gray at the top of its head. Its feathers transition to dark olive-green on the upperparts and upper wing and become yellow-tinged on long loose feathers on the back and rump. Sexes are alike in plumage, male being larger than female. The yellow longbill has a span of life of 3.6 years. The current population trend of the yellow longbill is stable. The number of mature individuals is unknown, as is the continuing decline of mature individuals.
The yellow longbill's habitat is in the forest, more specifically the subtropical and tropical moist lowland. Lowland habitats are of the lower and middle levels, including the primary and secondary forest. These forest... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Semuliki National Park | 🇺🇬 Uganda |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Yellow Longbill sighting in Semuliki National Park on a given day, based on 95 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 72nd most-seen of the 280 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
August and October
In those months about 40% of wildlife watchers report a Yellow Longbill in Semuliki National Park on a given day, against about 10% in January, March and November, the lowest months. Those are among Semuliki National Park's wettest months, with about 120 mm of rain a month against 5 mm in January.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Yellow Longbill 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 Semuliki National Park, in our data
Semuliki National Park is the only park on Wallace's Line with enough records to rate Yellow Longbill sightings: about 20% of wildlife watchers there report one on a given day.
Same family: Macrosphenidae
The closest relatives of the Yellow Longbill that you can see in Semuliki National Park (family Macrosphenidae, African Warblers) are Green Crombec (about 50%) and Lemon-bellied Crombec (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow Longbill is recorded against all the birds logged in Semuliki National Park (95 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.
