Riparia chinensis
Silhouette: Andy Wilson · PhyloPic
In 3 days ~10% in a week ~30%
The grey-throated martin or Asian plain martin (Riparia chinensis) is a small passerine bird in the swallow family. The grey-throated martin is found in open habitats such as farmland, grassland and savannah, usually near water. It is found from Tajikistan, Afghanistan and Indian subcontinent to southern China, Taiwan, and the northern Philippines. It was formerly considered a subspecies of the plain martin, since renamed the brown-throated martin.
Rasmussen, P.C., and J.C. Anderton (2005). Birds of South Asia. The Ripley Guide. Volume 2: attributes and status. Smithsonian Institution and Lynx Edicions, Washington D.C. and Barcelona. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chitwan National Park | 🇳🇵 Nepal | |
| 2 | Royal Bardia National Park | 🇳🇵 Nepal | |
| 3 | Ranthambore National Park | 🇮🇳 India | |
| 4 | Kaziranga National Park | 🇮🇳 India | |
| 5 | Keoladeo National Park | 🇮🇳 India | |
| 6 | Jim Corbett National Park | 🇮🇳 India | |
| 7 | Namdapha National Park | 🇮🇳 India | |
| 8 | Manas National Park | 🇮🇳 India | |
| 9 | Taroko National Park | 🇹🇼 Taiwan | |
| 10 | Satpura National Park | 🇮🇳 India | |
| 11 | Bandhavgarh National Park | 🇮🇳 India | |
| 12 | Kanha National Park | 🇮🇳 India |
Rare
Under 5% of wildlife watchers report a Gray-throated Martin sighting in Tainan on a given day, based on 100 verified sightings from GBIF citizen-science data. It is the 52nd most-seen of the 116 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
October to February
In those months about 10% of wildlife watchers report a Gray-throated Martin in Tainan on a given day, against under 5% in March to September, the lowest months. Those are among Tainan's driest months, with about 45 mm of rain a month against 440 mm in August.
Between 2 and 5 am
Across all the parks we cover, that three-hour window holds the most Gray-throated Martin sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
8th of 21
Of the 21 cities where we can rate Gray-throated Martin sightings, Tainan ranks 8th at under 5%. The best odds are in Hanoi (Vietnam, about 30%), Taichung (Taiwan, about 20%) and Lucknow (India, about 10%).
Same family: Hirundinidae
The closest relatives of the Gray-throated Martin that you can see in Tainan (family Hirundinidae, Swallows and Martins) are Eastern Red-rumped Swallow (about 60%), Barn Swallow (about 50%) and Pacific Swallow (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gray-throated Martin is recorded against all the birds logged in Tainan (100 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.
