Temnurus temnurus
The Ratchet-tailed Treepie, *Temnurus temnurus*, is a striking, medium-sized corvid distinguished by its entirely glossy black plumage and its uniquely structured tail. Measuring approximately 32-35 cm (12.5-13.8 inches) in length, including its long tail, it features a sturdy, slightly decurved black bill and bright red eyes that contrast sharply with its dark feathers. The most prominent field mark, and the source of its common name, is its graduated tail, where the outer tail feathers curv...
Found primarily in subtropical and tropical moist lowland forests, it inhabits dense evergreen and broadleaf deciduous forests, often preferring the middle and upper canopy. Occurs from sea level up to elevations of about 1,500 meters, occasionally ranging higher.
Omnivorous, feeding mainly on large insects such as mantises, cicadas, and beetles, as well as larvae, small vertebrates like lizards and geckos, and the eggs and nestlings of other birds. They also consume various fruits and berries.
This arboreal species is primarily diurnal, typically observed foraging and moving in pairs or small family groups within the forest canopy and mid-storey. They employ an agile foraging strategy, clambering and hopping through branches, gleaning insects from foliage and bark, and occasionally pro...
The Ratchet-tailed Treepie is endemic to Southeast Asia, with its primary distribution encompassing Vietnam, Laos, and the island of Hainan in southern China. While its presence in Cambodia is sometimes noted, records are scarce and often considered peripheral. It is a resident species across its...
Least Concern
- The Ratchet-tailed Treepie is the only species in its genus, *Temnurus*, making it a unique evolutionary branch within the Corvidae family. - Its distinctive tail feathers are not only long and graduated but feature barb-less shafts at the tips, creating a unique 'ratchet' or serrated appearanc...