English: Eurasian Jay, Common Jay  
Russian: Сойка
Mongolian: Цагчаа ятгашаазгай, Ятга шаазгай
German: Eichelhaher  
French: Geai des chenes   
Japanese: カケス (Kakesu)

Body length: 32-35 cm
Wing span: 52-58 cm

Resident breeder
Breeding season: May-August

Egg number: 3-7
Egg colour: Bluish green with brownish or greenish tinges.
Brood:  1 per year

Global status: Least concern
Regional status: Least concern

Food: Seeds, berries, fruits, and other plant, matter trees.

Habitat: Breeding pairs build their nest in trees 3-6 m above ground, sometimes higher in tree cavities. The nest is placed near the main trunk or secondary fork. The nest is a platform of small twigs and roots, lined with rootlets, lichen, feathers and other fine plant fibers. Breeding has not yet been recorded in Hustai National Park.