Apus niansae
Silhouette: Ferran Sayol · PhyloPic
In 3 days <5% in a week ~10%
The Nyanza swift (Apus niansae) is a species of swift in the family Apodidae. It is found in Eritrea, Ethiopia, Kenya, Somalia, South Sudan, Tanzania, and Uganda. The Nyanza swift, also known as the brown swift, is a medium sized bird with sleek wings, along with a small and compact head. It has a short, forked tail, blunt rectrices, and small coverts. In contrast with its head and torso, the Nyanza swift's outer wings are pale brown along with a pale throat. In the field, the Nyanza swift is commonly unseen and hard to identify without a good view or clear picture. It is commonly spotted in the rainy season and scarce during dry parts of the year. The anatomy of the Nyanza swift is not well known.
There are 2 subspecies Apus niansae niansas Apus niansa somalicus The Nyanza swift can be found in areas of high elevation, gorges, cliff faces, and human settlements like cities and towns. It has been spotted in places such as Eritrea, Western Ethiopia, Eastern Uganda, Western Kenya, and Northern Tanzania. The Nyanza swift uses wet areas to search for sources of food and can rarely be found in lowland areas.
The Nyanza... Wikipedia →
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Ethiopia · 2014
© Andrew Spencer · XC209974 · CC BY-NC-SA 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Aberdare National Park | 🇰🇪 Kenya | |
| 2 | Lake Nakuru National Park | 🇰🇪 Kenya | |
| 3 | Arusha National Park | 🇹🇿 Tanzania | |
| 4 | Bale Mountains National Park | 🇪🇹 Ethiopia | |
| 5 | Ngorongoro Conservation Area | 🇹🇿 Tanzania | |
| 6 | Kidepo Valley National Park | 🇺🇬 Uganda | |
| 7 | Samburu National Reserve | 🇰🇪 Kenya | |
| 8 | Nairobi National Park | 🇰🇪 Kenya | |
| 9 | Masai Mara National Reserve | 🇰🇪 Kenya | |
| 10 | Serengeti National Park | 🇹🇿 Tanzania |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Addis Ababa | 🇪🇹 Ethiopia |
Rare
Under 5% of wildlife watchers report a Nyanza Swift sighting in Nairobi National Park on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 318th most-seen of the 371 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Nyanza Swift in Nairobi National Park on a given day, so our monthly data shows no clear season.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Nyanza Swift sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
8th of 10
Of the 10 parks where we can rate Nyanza Swift sightings, Nairobi National Park ranks 8th at under 5%. The best odds are in Aberdare National Park (Kenya, about 10%), Lake Nakuru National Park (Kenya, about 10%) and Arusha National Park (Tanzania, about 10%).
Same genus: Apus
The closest relatives of the Nyanza Swift that you can see in Nairobi National Park (genus Apus, Typical Swifts) are Little Swift (about 50%) and White-rumped Swift (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Nyanza Swift is recorded against all the birds logged in Nairobi National Park (21 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.
