Iduna similis
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~20%
The Mountain yellow warbler (Iduna similis) is a medium sized bird with a mix of olive and yellow coloration. This bird is native to the eastern Afromontane. It normally feeds on flies but sometimes on remaining crops from harvests. An easy way to recognize this bird is with its whistle-tone vocalizations. The Mountain yellow warbler has a conservation status of Least Concern. This bird is a species of Acrocephalidae warbler; formerly, these were placed in the paraphyletic "Old World warblers".
This is a medium-sized bird with an olive and yellow coloration throughout the plumage. The head and back of the bird are olive-green in color, while the stomach is vibrant yellow. This bird's bill is very short and dark brown. The adult male and female are very similar in looks while the adolescent is browner and a paler yellow color. This bird is known for being very territorial.
The Mountain Yellow Warbler is native to the Albertine rift and East African montane forests, Imatong and Eastern Arc mountains. Its natural habitats are subtropical or tropical moist montane forests and subtropical or tropical moist shrubland. Common areas where this... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Aberdare National Park | 🇰🇪 Kenya | |
| 2 | Volcanoes National Park | 🇷🇼 Rwanda | |
| 3 | Virunga National Park | 🇨🇩 Democratic Republic of the Congo | |
| 4 | Bwindi Impenetrable National Park | 🇺🇬 Uganda | |
| 5 | Nyungwe National Park | 🇷🇼 Rwanda | |
| 6 | Ngorongoro Conservation Area | 🇹🇿 Tanzania |
Rare
Under 5% of wildlife watchers report a Mountain Yellow-Warbler sighting in Nyungwe National Park on a given day, based on 34 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 155th most-seen of the 252 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.
January, July and October
In those months about 10% of wildlife watchers report a Mountain Yellow-Warbler in Nyungwe National Park on a given day, against under 5% in February–June, August–September and November–December, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Mountain Yellow-Warbler sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 6
Of the 6 parks where we can rate Mountain Yellow-Warbler sightings, Nyungwe National Park ranks 5th at under 5%. The best odds are in Aberdare National Park (Kenya, about 30%), Volcanoes National Park (Rwanda, about 20%) and Virunga National Park (Democratic Republic of the Congo, about 20%).
Same order: Passeriformes
The closest relatives of the Mountain Yellow-Warbler that you can see in Nyungwe National Park (order Passeriformes, Perching Birds) are Chubb's Cisticola (about 70%), Common Bulbul (about 60%) and Green White-eye (about 60%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Mountain Yellow-Warbler is recorded against all the birds logged in Nyungwe National Park (34 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.
