Habitat and Ecology
Molecular Biology and Genetics
Statistics of barcoding coverage: Garrulus lidthi
Public Records: 0
Specimens with Barcodes: 7
Species With Barcodes: 1
IUCN Red List Assessment
Red List Category
Red List Criteria
It is legally protected in Japan. Yuwandake on Amami-ooshima was established as a National Wildlife Protection Area, mainly for the conservation of this species and Amami Thrush Zoothera major. Several surveys and ecological studies have been completed. Introduced small Indian mongoose has been controlled within its range in recent years and as a result the species may now be stable or increasing. The increase in numbers of Large-billed Crows Corvus macrorhynchos on Amami-ooshima has been halted by improvements in refuse management (K. Ishida in litt. 2012).
Conservation Actions Proposed
Carry out surveys to obtain an up-to-date population estimate. Conduct regular surveys to ascertain whether the population is in fact stable or recovering. Conserve and restore remaining areas of mature forest on Amami-ooshima. Provide nest-boxes in areas where there is a shortage of suitable natural nesting sites. Control alien predators on Amami-ooshima.
Measuring up to 38 cm (15 in) in total length, it is slightly larger than its close relative the Eurasian jay, with a proportionately stouter bill and also a longer tail. It has no discernible crest, with the head feathers a velvety black, the shoulders and back a deep purplish blue and all other parts a rich chestnut purple.
This jay has a very restricted distribution occurring only on the southern Japanese islands of Amami Ōshima and Tokunoshima in pine forest, sub-tropical woodland and cultivated areas especially around villages.
The bird nests in large cavities in trees but otherwise the nest is the same as that of the other two Garrulus species with 3–4 eggs.
The voice is similar to that of the Eurasian jay.
The species was threatened in the past by hunting for its feathers, which were used for decorating ladies' hats. Today it is threatened by introduced small Indian mongooses, which were brought to its range to control the venomous Okinawa pit viper. The species is fully protected under Japanese law and is increasing in numbers thanks to control of the mongooses.
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