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 Queen Elizabeth National Park on a given day, based on 61 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 238th most-seen of the 434 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.
November
In that month about 20% of wildlife watchers report a Greater Swamp Warbler in Queen Elizabeth National Park on a given day, against under 5% in October and December–August, the lowest months. That is one of Queen Elizabeth National Park's wettest months, with about 110 mm of rain against 15 mm in January.
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 4 parks where we can rate Greater Swamp Warbler sightings, Queen Elizabeth National Park has the highest daily chance: under 5%. Next come Lake Mburo National Park (Uganda, under 5%) and Murchison Falls 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 Queen Elizabeth National Park (61 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.
