It is a well-known fact that many birds, including blue jays, hoard food. However, some blue jays take hoarding to a new level. It seems that at times blue jays will actually hoard chips of paint plucked from the sides of houses and other buildings.
Nobody knows for sure why these large, handsome birds would ever want to hoard paint chips. However, some suggest they use the chips as a source of calcium. Who knows?