Sitta nagaensis
Silhouette: Alan and Elaine Wilson (Modified) · PhyloPic
In 3 days ~40% in a week ~70%
The chestnut-vented nuthatch (Sitta nagaensis) is a species of bird in the nuthatch family Sittidae. It is a medium-sized nuthatch, measuring 12.5–14 cm (4.9–5.5 in) in length. The upperparts are a solid grey-blue, with a markedly black loral stripe. The underparts are uniform grey to buff from the throat to belly, with brick red on the flanks. The undertail is white with a rufous border. The chestnut-vented nuthatch utters different kinds of calls, which can sometimes sound like a wren alarm, and its song is a monotonous, stereotypical crackle, typically chichichichi. Its ecology is poorly known, but it probably feeds on small arthropods and seeds, and the breeding season begins between March and May. The nest is typically located in a hole in the trunk of a tree, and the clutch has two to five eggs.
Chestnut-vented nuthatches are found in the northeast of India, in parts of Tibet and south-central China, descending into eastern Myanmar and northwestern Thailand. Isolated populations also live in southern Laos and Vietnam. It mainly lives in evergreen forests or pine forests, but can also live in mixed or deciduous forests. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests. Its altitudinal distribution varies according to the localities, but ranges from 915–4,570 m (3,002–14,993 ft). The species was described in 1874 by the British naturalist Henry Haversham Godwin-Austen, who named it Sitta nagaensis after the Naga Hills, where the type material was collected. It belongs to the S. europaea group of species, including the Kashmir nuthatch (S. cashmirensis) and the Eurasian nuthatch (S. europaea), all of which build mud entrances to their nests. The species' population is not known but appears to be declining. However, the bird's range is relatively wide, and the International Union for the Conservation of Nature currently considers the species of least concern. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Doi Inthanon National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kunming | 🇨🇳 China |
Possible
About 20% of wildlife watchers report a Chestnut-vented Nuthatch sighting in Kunming on a given day, based on 36 verified sightings from GBIF citizen-science data. It is the 34th most-seen of the 99 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
January, July and October
In those months about 30% of wildlife watchers report a Chestnut-vented Nuthatch in Kunming on a given day, against about 10% in February–March, August and November–December, the lowest months.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Chestnut-vented Nuthatch sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Only Kunming, in our data
Kunming is the only city on Wallace's Line with enough records to rate Chestnut-vented Nuthatch sightings: about 20% of wildlife watchers there report one on a given day.
Same order: Passeriformes
The closest relatives of the Chestnut-vented Nuthatch that you can see in Kunming (order Passeriformes, Perching Birds) are Anderson's Bulbul (about 90%), White Wagtail (about 70%) and Oriental Magpie-Robin (about 70%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut-vented Nuthatch is recorded against all the birds logged in Kunming (36 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.
