Acrocephalus rufescens
Silhouette: Yves Hoebeke · PhyloPic
In 3 days ~10% in a week ~20%
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. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Queen Elizabeth National Park | 🇺🇬 Uganda | |
| 2 | Lake Mburo National Park | 🇺🇬 Uganda | |
| 3 | Murchison Falls National Park | 🇺🇬 Uganda | |
| 4 | Moremi Game Reserve | 🇧🇼 Botswana |
Rare
Under 5% of wildlife watchers report a Greater Swamp Warbler sighting in Murchison Falls National Park on a given day, based on 35 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 239th most-seen of the 424 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.
February and June–July
In those months about 10% of wildlife watchers report a Greater Swamp Warbler in Murchison Falls National Park on a given day, against under 5% in March–May and August–January, the lowest months.
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.
Among the best
Of the 4 parks where we can rate Greater Swamp Warbler sightings, Murchison Falls National Park ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Queen Elizabeth National Park (Uganda, under 5%) and Lake Mburo National Park (Uganda, under 5%).
GBIF citizen-science records
It is estimated from how often the Greater Swamp Warbler is recorded against all the birds logged in Murchison Falls National Park (35 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.
