Eurasian Jay (Garrulus glandarius) lives in woodland areas across Europe, Western Asia. It feeds on insects and seeds. Its conservation status is Least Concern.
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A Eurasian jay can carry a single acorn up to 20 km from the tree where it was found, a feat that has helped oak trees colonise new ground. The bird routinely buries the seeds it gathers, creating hidden stores for later use. Because each individual can move more than a thousand acorns per year, these long-range trips accumulate into a powerful dispersal force. This behaviour is credited with the rapid northward spread of oaks after the last ice age.
To keep its plumage free from parasites the Eurasian jay seeks out active anthills, perches on them and spreads its wings. While perched, formic acid from the ants is sprayed onto its feathers, acting as a natural insecticide. This behaviour provides a quick, effective way to cleanse the bird's coat without the need for preening or external cleaners.
Before the advent of large-scale commercial tree planting, each Eurasian jay was capable of scattering over a thousand acorns annually. By hoarding and later burying these seeds, the birds acted as living couriers for the European oak across their range. Their relentless caching and transport turned them into the primary agents of oak propagation throughout the continent.
The longest-recorded Eurasian jay lived to 16 years and 9 months, having been ringed in 1966 and recovered dead in 1983 in Skelton, York, United Kingdom.
Sources
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In the dappled light of the forest, the Eurasian Jay moves with a fluid, almost furtive, grace, its iridescent feathers flashing like shards of stained glass as it darts between the trees. With a sharp, intelligent gaze, it scans its surroundings, ever vigilant for the next opportunity to forage or cache a prized nut or seed, its remarkable memory guiding it to hidden treasures scattered throughout its domain. As it flits and weaves, its distinctive call echoes through the woodland, a bright, rasping sound that seems to embody the very essence of this bold, adaptable bird.
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