What are the chances of seeing a Trimmed Swift in Cape Town?
Rare
Under 5% of wildlife watchers report a Trimmed Swift sighting in Cape Town on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 243rd most-seen of the 311 insects 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.
When is the best time to see a Trimmed Swift in Cape Town?
April
In that month about 10% of wildlife watchers report a Trimmed Swift in Cape Town on a given day, against under 5% in May to March, the lowest months.
Where else can you see a Trimmed Swift?
Only Cape Town, in our data
Cape Town is the only city on Wallace's Line with enough records to rate Trimmed Swift sightings: under 5% of wildlife watchers there report one on a given day.
Which relatives of the Trimmed Swift live in Cape Town?
Same order: Lepidoptera
The closest relatives of the Trimmed Swift that you can see in Cape Town (order Lepidoptera, Butterflies and Moths) are Large White (about 30%), Garden Acraea (about 30%) and Painted Lady (about 20%), with each one's daily chance of a sighting.
Where does the Trimmed Swift sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Trimmed Swift is recorded against all the insects logged in Cape Town (7 verified sightings), 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.