Acrocephalus rufescens
Silhouette: Yves Hoebeke · PhyloPic
In 3 days ~40% in a week ~70%
The greater swamp warbler (Acrocephalus rufescens) is a species of Old World warbler in the family Acrocephalidae. It is found in the African countries of Angola, Botswana, Burundi, Cameroon, Central African Republic, Chad, Republic of the Congo, Democratic Republic of the Congo, Equatorial Guinea, Gabon, Ghana, Kenya, Mali, Mauritania, Namibia, Nigeria, Rwanda, Senegal, South Sudan, Tanzania, Togo, Uganda, Zambia, and Zimbabwe. Its natural habitat is swamps.
Greater swamp warbler - Species text in The Atlas of Southern African Birds.
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Djoudj National Bird Sanctuary | 🇸🇳 Senegal | |
| 2 | Queen Elizabeth National Park | 🇺🇬 Uganda | |
| 3 | Lake Mburo National Park | 🇺🇬 Uganda | |
| 4 | Murchison Falls National Park | 🇺🇬 Uganda | |
| 5 | Moremi Game Reserve | 🇧🇼 Botswana |
With luck
About 10% of wildlife watchers report a Greater Swamp Warbler sighting in Djoudj National Bird Sanctuary on a given day, based on 19 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 127th most-seen of the 173 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.
January and March–April
In those months about 20% of wildlife watchers report a Greater Swamp Warbler in Djoudj National Bird Sanctuary on a given day, against about 10% in February and November–December, the lowest months. Those are among Djoudj National Bird Sanctuary's driest months, with almost no rain against 55 mm in August. May to October have too few records to rate.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Greater Swamp Warbler sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 5 parks where we can rate Greater Swamp Warbler sightings, Djoudj National Bird Sanctuary has the highest daily chance: about 10%. Next come Queen Elizabeth National Park (Uganda, under 5%) and Lake Mburo National Park (Uganda, under 5%).
Same genus: Acrocephalus
The closest relatives of the Greater Swamp Warbler that you can see in Djoudj National Bird Sanctuary (genus Acrocephalus, Reed Warblers) are Eurasian Reed-Warbler (about 30%) and Sedge Warbler (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Greater Swamp Warbler is recorded against all the birds logged in Djoudj National Bird Sanctuary (19 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.
