Fixsenia favonius
In 3 days ~10% in a week ~20%
Satyrium favonius, the oak hairstreak or southern hairstreak, is a butterfly of the family Lycaenidae. It is found in the United States from southern New England and the Atlantic Coast south to peninsular Florida and west to central Illinois, south-eastern Colorado and the Gulf Coast.
The wingspan is 22–38 mm. The larvae feed on the leaves, buds and male catkins of Quercus species. The species overwinters as an egg. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Merritt Island National Wildlife Refuge | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Miami | 🇺🇸 United States | |
| 3 | San Antonio | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Oak Hairstreak sighting in San Antonio on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 497th most-seen of the 697 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Oak Hairstreak in San Antonio on a given day, so our monthly data shows no clear season.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Oak Hairstreak sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 3 cities where we can rate Oak Hairstreak sightings, San Antonio ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Austin (United States, under 5%) and Miami (United States, under 5%).
Same family: Lycaenidae
The closest relatives of the Oak Hairstreak that you can see in San Antonio (family Lycaenidae, Gossamer-winged Butterflies) are Gray Hairstreak (about 20%), Reakirt's Blue (about 20%) and Ceraunus Blue (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Oak Hairstreak is recorded against all the insects logged in San Antonio (9 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.
