Family Thrushes (Turdidae)

Vulnerable

Izu Thrush (Turdus celaenops)


Taxonomy

French: Merle des Izu German: Izudrossel Spanish: Zorzal de las Izu
Taxonomy:

Turdus celaenops

Stejneger

, 1887,

Miyakeshima, “The Seven Islands”, Izu, Japan

.

Sometimes considered conspecific with T. chrysolaus; recent study#R found only very small genetic distance between the two; further study needed. Proposed race yakushimensis purportedly larger and darker, with darker bill, but features not constant. Monotypic.

Distribution:

N Ryukyu Is (Yakushima, Tokara Is) and Izu Is (from Toshima to Aogashima); some move to islands S of Kyushu, Oshima and adjacent S Honshu in winter.

Descriptive notes

23 cm. Male has black hood to lower breast, rich brownish-russet upper­parts, blackish wings and tail; chestnut-orange upper belly and flanks, white mid-belly to dark-... read more

Voice

Song, from low perch, mid-Mar to early Jul, a series of 3–5 buzzing trills, “tsurrrrrr... read more

Habitat

Mature deciduous woodland and laurel forest, preferably with strong canopy and sparse shrub layer,... read more

Food and feeding

Fruit, seeds and, in summer, mainly invertebrates; focuses on caterpillars in canopy during Apr–Jun. Main food brought to nestlings... read more

Breeding

Mar–Jun on Miyake-jima, rarely into Aug, peak in May; similar period on other islands inferred from various records of nests and... read more

Movements

Mainly sedentary on Izu Is, but in winter some move N to adjacent parts of Honshu (mainland Japan... read more

Status and conservation

VULNERABLE. Restricted-range species: present in Izu Islands EBA. Population placed in range 2500–10,000 (probably never greater than this owing to tiny range), and... read more

Recommended citation

Collar, N. (2018). Izu Thrush (Turdus celaenops). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/58271 on 20 November 2018).