Heliconius cydno
In 3 days ~50% in a week ~80%
Heliconius cydno, the cydno longwing, is a nymphalid butterfly that ranges from Mexico to northern South America. It is typically found in the forest understory and deposits its eggs on a variety of plants of the genus Passiflora. It is a member of the Heliconiinae subfamily of Central and South America, and it is the only heliconiine that can be considered oligophagous. H. cydno is also characterized by hybridization and Müllerian mimicry. Wing coloration plays a key role in mate choice and has further implications in regards to sympatric speciation. Macrolide scent gland extracts and wing-clicking behavior further characterize this species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pico Bonito National Park | 🇭🇳 Honduras | |
| 2 | Tenorio Volcano National Park | 🇨🇷 Costa Rica | |
| 3 | Tortuguero National Park | 🇨🇷 Costa Rica | |
| 4 | Chagres National Park | 🇵🇦 Panama | |
| 5 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 6 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 7 | Soberanía National Park | 🇵🇦 Panama | |
| 8 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 9 | Gandoca-Manzanillo Wildlife Refuge | 🇨🇷 Costa Rica | |
| 10 | Cahuita National Park | 🇨🇷 Costa Rica | |
| 11 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 12 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Medellín | 🇨🇴 Colombia |
Possible
About 20% of wildlife watchers report a Cydno Longwing sighting in Chagres National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 9th most-seen of the 25 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.
February
In that month about 40% of wildlife watchers report a Cydno Longwing in Chagres National Park on a given day, against under 5% in June–August, October and December–January, the lowest months. That is one of Chagres National Park's driest months, with about 30 mm of rain against 300 mm in July.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Cydno Longwing 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 12
Of the 12 parks where we can rate Cydno Longwing sightings, Chagres National Park ranks 4th at about 20%. The best odds are in Pico Bonito National Park (Honduras, about 30%), Tenorio Volcano National Park (Costa Rica, about 30%) and Tortuguero National Park (Costa Rica, about 20%).
Same genus: Heliconius
The closest relatives of the Cydno Longwing that you can see in Chagres National Park (genus Heliconius, Longwings and Heliconians) are Sara Longwing (about 20%) and Red Postman (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cydno Longwing is recorded against all the insects logged in Chagres National Park (7 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.
