The Eurasian Jay (Garrulus glandarius) is a species of bird occurring over a vast region from Western Europe and north-west Africa to the eastern seaboard of Asia and down into south-east Asia. Across its vast range, several very distinct racial forms have evolved to look very different from each other, especially when forms at the extremes of its range are compared.
A member of the widespread jay group, the Eurasian Jay inhabits mixed woodland, particularly with oaks, and is an habitual acorn hoarder.
The usual call of the Eurasian Jay is the alarm call which is a harsh, rasping screech and is used upon sighting various predatory animals, but the Jay is well known for its mimicry, often sounding so like a different species that it is virtually impossible to distinguish its true identity unless the Jay is seen. However, the Jay is a potential prey item for owls at night and other birds of prey such as Goshawks and Peregrines during the day.
It nests in trees or large shrubs laying usually 4–6 eggs that hatch after 16–19 days and are fledged generally after 21–23 days. Both sexes typically feed the young.
Source: en.wikipedia.org/wiki/Eurasian_Jay - 09.10.2010