Eresia clio
In 3 days ~30% in a week ~50%
Eresia clio, the common crescent or Clio crescent, is a butterfly of the family Nymphalidae. It was described by Carl Linnaeus in 1758. It is found from southern Mexico to Peru, Bolivia, the Guyanas and Brazil (from Amazonas to Mato Grosso). The habitat consists of forest edges with low vegetation.
The wingspan is about 36 mm. Adults feed on flower nectar and males have been observed sucking up moisture from damp places. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cockscomb Basin Wildlife Sanctuary | 🇧🇿 Belize | |
| 2 | Lago de Yojoa | 🇭🇳 Honduras | |
| 3 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 4 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 5 | Manu National Park | 🇵🇪 Peru | |
| 6 | Cahuita National Park | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report a Clio Crescent sighting in Arenal Volcano National Park on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 64th most-seen of the 302 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 30% of wildlife watchers report a Clio Crescent in Arenal Volcano National Park on a given day, against under 5% in January, April and October, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Clio Crescent sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 6
Of the 6 parks where we can rate Clio Crescent sightings, Arenal Volcano National Park ranks 4th at about 10%. The best odds are in Cockscomb Basin Wildlife Sanctuary (Belize, about 20%), Lago de Yojoa (Honduras, about 20%) and Braulio Carrillo National Park (Costa Rica, about 10%).
GBIF citizen-science records
It is estimated from how often the Clio Crescent is recorded against all the insects logged in Arenal Volcano 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.
