Orthetrum chrysis
In 3 days ~30% in a week ~60%
The Spine-tufted skimmer, or brown-backed red marsh hawk, (Orthetrum chrysis) is a species of dragonfly in the family Libellulidae. It is widespread in many Asian countries. It is a medium sized dragonfly with dark thorax and blood-red abdomen. It looks very similar to Orthetrum pruinosum in shape and size; but can be distinguished by the color of the abdomen. The abdomen of the female is ochreous brown. It breeds in pools and marshes.
List of odonates of Sri Lanka List of odonates of India List of odonata of Kerala chrysis.html World Dragonflies Animal diversity web Query Results Sri Lanka Biodiversity NCBI Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bako National Park | 🇲🇾 Malaysia | |
| 2 | Periyar National Park | 🇮🇳 India | |
| 3 | Sinharaja Forest Reserve | 🇱🇰 Sri Lanka | |
| 4 | Khao Sok National Park | 🇹🇭 Thailand | |
| 5 | Khao Yai National Park | 🇹🇭 Thailand | |
| 6 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 7 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia | |
| 8 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 9 | Sepilok | 🇲🇾 Malaysia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore | |
| 2 | Johor Bahru | 🇲🇾 Malaysia | |
| 3 | Thiruvananthapuram | 🇮🇳 India | |
| 4 | Kozhikode | 🇮🇳 India | |
| 5 | Tuen Mun | 🇨🇳 China | |
| 6 | Hong Kong | 🇨🇳 China | |
| 7 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 8 | Yogyakarta | 🇮🇩 Indonesia | |
| 9 | Kochi | 🇮🇳 India | |
| 10 | Ho Chi Minh City | 🇻🇳 Vietnam |
With luck
About 10% of wildlife watchers report a Brown-Backed Red Marsh Hawk sighting in Hong Kong on a given day, based on 151 verified sightings from GBIF citizen-science data. It is the 77th most-seen of the 1125 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
May and September–October
In those months about 20% of wildlife watchers report a Brown-Backed Red Marsh Hawk in Hong Kong on a given day, against under 5% in January to March, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Brown-Backed Red Marsh Hawk sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
6th of 12
Of the 12 cities where we can rate Brown-Backed Red Marsh Hawk sightings, Hong Kong ranks 6th at about 10%. The best odds are in Singapore (Singapore, about 20%), Johor Bahru (Malaysia, about 20%) and Thiruvananthapuram (India, about 20%).
Same genus: Orthetrum
The closest relatives of the Brown-Backed Red Marsh Hawk that you can see in Hong Kong (genus Orthetrum) are Blue Marsh Hawk (about 30%), Crimson-Tailed Marsh Hawk (about 20%) and Blue-Tailed Forest Hawk (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown-Backed Red Marsh Hawk is recorded against all the insects logged in Hong Kong (151 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.
