Acorn storage in tree cavities by Eurasian jay (Garrulus glandarius L.)

Abstract Seed hoarding by granivorous animals requires cache-protection strategies which allow to protect hoarded seeds against pilferage. This study reports the first case of acorn in tree cavities Eurasian Jays ( Garrulus glandarius ). Out 116 removed acorns both pedunculate oak Quercus robur ) and Northern red Q. rubra ), we localized 14 consumed 102 stored acorns. Five experimental (4.9% acorns) were found cavities. The notion that may constitute a behavior represents working hypothesis ought be tested future studies.