Coelognathus radiatus
Silhouette: Alex Slavenko · PhyloPic
In 3 days ~80% in a week >90%
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 |
Likely
About 40% of wildlife watchers report a Copperhead Rat Snake sighting in Chattogram on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 5th most-seen of the 6 reptiles we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
September
In that month about 70% of wildlife watchers report a Copperhead Rat Snake in Chattogram on a given day, against about 10% in January, March, June–August and October, the lowest months. That is one of Chattogram's wettest months, with about 400 mm of rain against 10 mm in January. February has too few records to rate.
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.
Yes
Of the 8 cities where we can rate Copperhead Rat Snake sightings, Chattogram has the highest daily chance: about 40%. Next come 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 Chattogram (family Colubridae, Colubrid Snakes) are Chequered Keelback (about 50%) and Indian Wolf Snake (about 50%), 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 Chattogram (6 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.
