Hypergerus atriceps
Silhouette: Sheatherius · PhyloPic
In 3 days ~40% in a week ~70%
The oriole warbler (Hypergerus atriceps) is a large warbler in the family Cisticolidae, and the only member of the genus Hypergerus. This bird is a resident breeder in west Africa from southern Senegal to Cameroon. This skulking passerine is typically found in dense thickets usually near water. The oriole warbler builds a large untidy nest suspended from palm leaves.
These 20-cm long warblers have a long tail, strong legs and a long black bill. At a weight of around 30 g (1.1 oz) the oriole warbler may be the largest of the species-rich Cisticolidae family. Adults are light olive above, yellow below and have a black hood. The species' name refers to their resemblance to the unrelated but similarly black and yellow orioles. The sexes are similar, but juveniles are duller.
Like most warblers, the oriole warbler is insectivorous. The song is a loud whistled duetted toooo-ooo-eee-oooo, oooo-ooo-eee-oooo. The male always leads the duet and the female answers, though this is done in a manner that is temporally rather loose.
Birds of The Gambia by Barlow, Wacher and Disley, ISBN 1-873403-32-1 Ryan, Peter (2006). Family Cisticolidae (Cisticolas and allies). pp. 378–492 in... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Niokolo-Koba National Park | 🇸🇳 Senegal |
More parks will be added in future updates.
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Sedgwick County Zoo | 🇺🇸 United States | |
| 2 | Oregon Zoo | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report an Oriole Warbler sighting in Lomé on a given day, based on 17 verified sightings from GBIF citizen-science data. It is the 14th most-seen of the 43 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
November
In that month about 30% of wildlife watchers report an Oriole Warbler in Lomé on a given day, against about 10% in January, May–June and August, the lowest months. That is one of Lomé's driest months, with about 40 mm of rain against 180 mm in June. February, April, July and December have too few records to rate.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Oriole Warbler sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 7 cities where we can rate Oriole Warbler sightings, Lomé ranks 3rd at about 20%, level with the leaders once rounded. The best odds are in Yaoundé (Cameroon, about 20%) and Serrekunda (Gambia, about 20%).
GBIF citizen-science records
It is estimated from how often the Oriole Warbler is recorded against all the birds logged in Lomé (17 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.
