Calamonastes simplex
Silhouette: Sheatherius · PhyloPic
In 3 days ~70% in a week ~90%
The grey wren-warbler (Calamonastes simplex) is a species of bird in the family Cisticolidae. It is found in Angola, Burundi, Democratic Republic of the Congo, Ethiopia, Kenya, Malawi, Rwanda, Somalia, South Sudan, Tanzania, Uganda, and Zambia.
Its natural habitat is dry savanna. The grey wren-warbler is a shy bird found in dense bush and undergrowth. It is normally found singly or in pairs and is a dark brownish-grey with inconspicuous barred markings. The tail is black and the eye red. It is more likely to be heard than seen though there may be an occasional glimpse of its tail which wags up and down as it forages. Its sharp call is rather like two stones striking each other. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tsavo West National Park | 🇰🇪 Kenya | |
| 2 | Meru National Park | 🇰🇪 Kenya | |
| 3 | Mkomazi National Park | 🇹🇿 Tanzania | |
| 4 | Awash National Park | 🇪🇹 Ethiopia | |
| 5 | Samburu National Reserve | 🇰🇪 Kenya | |
| 6 | Tsavo East National Park | 🇰🇪 Kenya | |
| 7 | Amboseli National Park | 🇰🇪 Kenya | |
| 8 | Tarangire National Park | 🇹🇿 Tanzania |
Possible
About 30% of wildlife watchers report a Gray Wren-Warbler sighting in Tsavo East National Park on a given day, based on 231 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 47th most-seen of the 345 birds we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
October and December
In those months about 50% of wildlife watchers report a Gray Wren-Warbler in Tsavo East National Park on a given day, against about 20% in January, April–June and September, the lowest months. Those are among Tsavo East National Park's wettest months, with about 70 mm of rain a month against 10 mm in July.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Gray Wren-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.
6th of 8
Of the 8 parks where we can rate Gray Wren-Warbler sightings, Tsavo East National Park ranks 6th at about 30%. The best odds are in Tsavo West National Park (Kenya, about 50%), Meru National Park (Kenya, about 40%) and Mkomazi National Park (Tanzania, about 40%). All parks ranked.
Same family: Cisticolidae
The closest relatives of the Gray Wren-Warbler that you can see in Tsavo East National Park (family Cisticolidae, Cisticolas and Allies) are Yellow-breasted Apalis (about 10%), Ashy Cisticola (about 10%) and Pale Prinia (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gray Wren-Warbler is recorded against all the birds logged in Tsavo East National Park (231 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.
