Coelognathus radiatus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~20% in a week ~40%
Coelognathus radiatus, commonly known as the radiated ratsnake, copperhead rat snake, or copper-headed trinket snake, is a nonvenomous species of colubrid snake. These snakes are usually defensive in nature which makes it hard to catch or control them.
German: Strahlennatter English: Copperhead racer Copperhead rat snake Radiated rat snake Copper-headed trinket snake Thai: งูทางมะพร้าว, ngu taang mapao Myanmar: ငန်းစောင်း Laos:ງູສາ Malay: Ular Rusuk Kerbau Bengali (Bangladesh): দুধরাজ (Dudhraj), আরবালি সাপ (Arbali sap)
Vietnamese: rắn sọc dưa, rắn hổ ngựa Indonesia (Sumatra, Bangka, Borneo/Kalimantan, Java), Bali Malaysia and Brunei (Malaya and East Malaysia); Borneo, Singapore Island, Burma (Myanmar), Thailand (including Phuket), Koh Phangan
Laos, Cambodia, Vietnam, Japan (Ryukyu Islands), India (Assam, Arunachal Pradesh (Miao - Changlang district, Chessa, Chimpu, Itanagar - Papum Pare district) [A. Captain, pers. comm.]), Bangladesh, Nepal, South China (Fujian, Yunnan, Guangxi, Guangdong, Hong Kong),
Nepal Type locality: Java Barbour, Thomas (1912). Some Chinese Vertebrates: Amphibia and Reptilia... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Sok National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chattogram | 🇧🇩 Bangladesh | |
| 2 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 3 | Jakarta | 🇮🇩 Indonesia | |
| 4 | Tuen Mun | 🇨🇳 China | |
| 5 | Bangkok | 🇹🇭 Thailand | |
| 6 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 7 | Guangzhou | 🇨🇳 China | |
| 8 | Hong Kong | 🇨🇳 China |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Yangon Zoological Gardens | 🇲🇲 Myanmar (Burma) | |
| 2 | Chiang Mai Zoo | 🇹🇭 Thailand | |
| 3 | Safari Madrid | 🇪🇸 Spain | |
| 4 | Yaroslavl Zoo | 🇷🇺 Russia | |
| 5 | Warsaw Zoo | 🇵🇱 Poland | |
| 6 | Saigon Zoo and Botanical Gardens | 🇻🇳 Vietnam | |
| 7 | Zoo d'Amnéville | 🇫🇷 France | |
| 8 | Crocodile Farm | 🇹🇭 Thailand | |
| 9 | Central Park Zoo | 🇺🇸 United States | |
| 10 | Macau Zoo | 🇲🇴 Macao SAR China | |
| 11 | Siam Serpentarium | 🇹🇭 Thailand | |
| 12 | Snake Farm of Queen Saovabha Memorial Institute | 🇹🇭 Thailand | |
| 13 | Zoo Samara | 🇷🇺 Russia | |
| 14 | Aquarium d'Amnéville | 🇫🇷 France | |
| 15 | herpetarium warszawskiego ZOO | 🇵🇱 Poland | |
| 16 | Reptiland | 🇫🇷 France | |
| 17 | akwarium warszawskiego ZOO | 🇵🇱 Poland |
With luck
About 10% of wildlife watchers report a Copperhead Rat Snake sighting in Bangkok on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 21st most-seen of the 35 reptiles we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February, April–August and November
In those months about 10% of wildlife watchers report a Copperhead Rat Snake in Bangkok on a given day, against under 5% in March, September–October and December–January, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Copperhead Rat Snake sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 8
Of the 8 cities where we can rate Copperhead Rat Snake sightings, Bangkok ranks 5th at about 10%. The best odds are in Chattogram (Bangladesh, about 40%), Ho Chi Minh City (Vietnam, about 10%) and Jakarta (Indonesia, about 10%).
Same family: Colubridae
The closest relatives of the Copperhead Rat Snake that you can see in Bangkok (family Colubridae, Colubrid Snakes) are Golden Tree Snake (about 20%), Small-banded Kukri Snake (about 10%) and Yellow-Spotted Keelback (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Copperhead Rat Snake is recorded against all the reptiles logged in Bangkok (22 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.
