Sittiparus olivaceus
The Iriomote Tit (*Sittiparus olivaceus*) is a charmingly diminutive passerine, measuring approximately 11-13 centimeters in length and weighing a mere 10-15 grams. Its plumage is characterized by a distinctive olive-brownish back and wings, which give the species its specific epithet, contrasting with clean whitish underparts often washed with buffy tones on the flanks. Key identification marks include a dark cap (often blackish-brown), prominent white cheeks, and a dark line extending from ...
This species primarily inhabits subtropical evergreen broadleaf forests, favoring mature stands but also found in secondary growth and forest edges, typically at low to moderate elevations.
Their diet consists mainly of insects and their larvae, especially caterpillars, beetles, and spiders, supplemented by seeds, nuts, and small fruits, foraged primarily from tree foliage and bark.
Iriomote Tits are highly active and acrobatic, spending most of their day foraging high in the canopy among leaves and branches, often hanging upside down or clinging to bark in characteristic tit fashion. They are territorial during the breeding season, with pairs defending a nesting area. While...
The Iriomote Tit's entire geographic distribution is remarkably confined to Iriomote Island, the second-largest island in the Yaeyama Islands group of Okinawa Prefecture, Japan. As an island endemic, it is a resident species, with no migratory movements or significant vagrant records outside its ...
Least Concern
- The Iriomote Tit is one of the few bird species endemic solely to Iriomote Island, making it a unique component of Japan's biodiversity. - Despite its small size, it's known for its robust and clear vocalizations, which are a key differentiator from its closest relatives. - It was once consider...