Hypolycaena erylus
In 3 days ~20% in a week ~50%
Hypolycaena erylus, the common tit, is a small but striking butterfly found in India and South-East Asia that belongs to the lycaenids or blues family. The species was first described by Jean-Baptiste Godart in 1823. Bangladesh, Nepal, Sikkim, Myanmar, Cambodia, Thailand, Laos, Vietnam, southern Yunnan, Java, Lombok, Peninsular Malaysia, Sumatra, Borneo, Andamans, Nias, Sulawesi, Philippines, Sula, Bachan, Halmahera, Obi, Bismarck Archipelago and Waigeu.
Common. Not rare as per Haribal. The underside of both sexes is pale greyish brown. The underside hindwing does not have a spot in the basal area of 7. The butterfly has two tails – a 6 mm long one at V1 and a 5 mm long tail at V2. The markings include:
a double bar at end-cell a regular discal line on the forewing a broken, less regular line on the hindwing The male butterfly is pale blue to dark brown above, dark shining purple depending on the light. It has a black border with the upper forewing having a large black discal area of modified scales.
The female butterfly is dark brown and its hindwing has a white disconnected discal band above the tornus. The butterfly also has a white-edged... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Namdapha National Park | 🇮🇳 India | |
| 2 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 3 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 4 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 5 | Khao Yai National Park | 🇹🇭 Thailand |
With luck
About 10% of wildlife watchers report a Common Tit sighting in Khao Yai National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 149th most-seen of the 221 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
August and October
In those months about 20% of wildlife watchers report a Common Tit in Khao Yai National Park on a given day, against under 5% in March–July, September and December, the lowest months. Those are among Khao Yai National Park's wettest months, with about 220 mm of rain a month against 15 mm in December.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Common Tit sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 5
Of the 5 parks where we can rate Common Tit sightings, Khao Yai National Park ranks 5th at about 10%. The best odds are in Namdapha National Park (India, about 50%), Royal Manas National Park (Bhutan, about 30%) and Taman Negara National Park (Malaysia, about 10%).
Same family: Lycaenidae
The closest relatives of the Common Tit that you can see in Khao Yai National Park (family Lycaenidae, Gossamer-winged Butterflies) are Common Pierrot (about 20%), Common Posy (about 20%) and Fluffy Tit (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Tit is recorded against all the insects logged in Khao Yai National Park (6 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.
