Heliconius cydno
In 3 days ~60% in a week ~90%
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 30% of wildlife watchers report a Cydno Longwing sighting in Tenorio Volcano National Park on a given day, based on 27 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 5th most-seen of the 98 insects we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
August and October–November
In those months about 40% of wildlife watchers report a Cydno Longwing in Tenorio Volcano National Park on a given day, against under 5% in June and September, the lowest months.
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.
Among the best
Of the 12 parks where we can rate Cydno Longwing sightings, Tenorio Volcano National Park ranks 2nd at about 30%, level with the leaders once rounded. The best odds are in Pico Bonito National Park (Honduras, about 30%).
Same genus: Heliconius
The closest relatives of the Cydno Longwing that you can see in Tenorio Volcano National Park (genus Heliconius, Longwings and Heliconians) are Ismenius Tiger (about 10%) and Tiger Longwing (about 10%), 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 Tenorio Volcano National Park (27 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.
