Papilio zelicaon
In 3 days ~50% in a week ~80%
Papilio zelicaon, the Anise Swallowtail, is a common swallowtail butterfly of western North America. Both the upper and lower sides of its wings are black, but the upper wing has a broad yellow stripe across it, giving the butterfly an overall yellow appearance. There are striking blue spots on the rear edge of the rear wing, and the characteristic tails of the swallowtails. Its wingspan is 52–80 mm (2.0–3.1 in). Its body is somewhat shorter than the rather similar western tiger swallowtail, with which its range overlaps; it also lacks the black stripes, converging toward the tail, of the latter. There is a somewhat darker subspecies, P. z. nitra, which is rare throughout the range, though somewhat more often found at lower elevations.
The anise swallowtail has a wingspan ranging from 52 to 80 mm (2.0 to 3.1 in). Wings are mostly yellow, with black bands along the edges of both the forewings and hindwings. They are distinguished from tiger swallowtail butterflies by being smaller in size and lacking the vertical black striping patterns. There are yellowish-orange to red eyespots near the tails of each wing, each containing a black pupil. The body is predominantly black... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Glacier National Park | 🇺🇸 United States | |
| 2 | Grand Teton National Park | 🇺🇸 United States | |
| 3 | Channel Islands National Park | 🇺🇸 United States | |
| 4 | Olympic National Park | 🇺🇸 United States | |
| 5 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 6 | Yosemite National Park | 🇺🇸 United States | |
| 7 | Yellowstone National Park | 🇺🇸 United States | |
| 8 | Rocky Mountain National Park | 🇺🇸 United States | |
| 9 | Great Bear Rainforest | 🇨🇦 Canada | |
| 10 | Death Valley National Park | 🇺🇸 United States | |
| 11 | Grand Canyon National Park | 🇺🇸 United States | |
| 12 | Pacific Rim National Park Reserve | 🇨🇦 Canada | |
| 13 | Banff National Park | 🇨🇦 Canada | |
| 14 | Jasper National Park | 🇨🇦 Canada |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Francisco | 🇺🇸 United States | |
| 2 | Tijuana | 🇲🇽 México | |
| 3 | San Diego | 🇺🇸 United States | |
| 4 | Sacramento | 🇺🇸 United States | |
| 5 | Los Angeles | 🇺🇸 United States | |
| 6 | Vancouver | 🇨🇦 Canada | |
| 7 | Portland | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report an Anise Swallowtail sighting in San Francisco on a given day, based on 3,300 verified sightings from GBIF citizen-science data. It is the 2nd most-seen of the 737 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
June to August
In those months about 30% of wildlife watchers report an Anise Swallowtail in San Francisco on a given day, against under 5% in January, the lowest month. Those are among San Francisco's driest months, with almost no rain against 110 mm in December.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Anise Swallowtail sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 7 cities where we can rate Anise Swallowtail sightings, San Francisco has the highest daily chance: about 20%. Next come Tijuana (México, about 20%) and San Diego (United States, about 10%).
GBIF citizen-science records
It is estimated from how often the Anise Swallowtail is recorded against all the insects logged in San Francisco (3,300 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.
