... Western Scrub Jays (like this beauty) and their corvid relatives (crows, magpies, rooks) are birds that collect and cache food, to be eaten at a later date. Robb and I have been enjoying watching our local jays bustle around with acorns in their bills. They bury the acorns, look around, cock their heads to one side, dig the acorns up, and re-bury them. I particularly enjoy watching the jays "disguise" their food caches, by scattering dry leaves on top of their buried treasure. I recently ran across a series of articles about this behavior. Food-caching corvids hide food, but such caches are susceptible to pilfering by other individuals. Consequently, the birds use several counter strategies to protect their caches from theft, e.g. hiding most of them out of sight. When observed by potential pilferers at the time of caching, experienced jays that have been thieves themselves, take further protective action. Once the potential pilferers have left, they move caches those